diff --git a/CodeAnalysis/BannedSymbols.txt b/CodeAnalysis/BannedSymbols.txt
index 03fd21829d..3c60b28765 100644
--- a/CodeAnalysis/BannedSymbols.txt
+++ b/CodeAnalysis/BannedSymbols.txt
@@ -7,7 +7,6 @@ T:SixLabors.ImageSharp.IDeepCloneable`1;Use osu.Game.Utils.IDeepCloneable<T> ins
 M:osu.Framework.Graphics.Sprites.SpriteText.#ctor;Use OsuSpriteText.
 M:osu.Framework.Bindables.IBindableList`1.GetBoundCopy();Fails on iOS. Use manual ctor + BindTo instead. (see https://github.com/mono/mono/issues/19900)
 T:NuGet.Packaging.CollectionExtensions;Don't use internal extension methods.
-M:System.Enum.HasFlag(System.Enum);Use osu.Framework.Extensions.EnumExtensions.HasFlagFast<T>() instead.
 M:Realms.IRealmCollection`1.SubscribeForNotifications`1(Realms.NotificationCallbackDelegate{``0});Use osu.Game.Database.RealmObjectExtensions.QueryAsyncWithNotifications(IRealmCollection<T>,NotificationCallbackDelegate<T>) instead.
 M:System.Guid.#ctor;Probably meaning to use Guid.NewGuid() instead. If actually wanting empty, use Guid.Empty.
 M:Realms.CollectionExtensions.SubscribeForNotifications`1(System.Linq.IQueryable{``0},Realms.NotificationCallbackDelegate{``0});Use osu.Game.Database.RealmObjectExtensions.QueryAsyncWithNotifications(IQueryable<T>,NotificationCallbackDelegate<T>) instead.
diff --git a/osu.Game.Rulesets.Catch/CatchRuleset.cs b/osu.Game.Rulesets.Catch/CatchRuleset.cs
index 72d1a161dd..ad6dedaa8f 100644
--- a/osu.Game.Rulesets.Catch/CatchRuleset.cs
+++ b/osu.Game.Rulesets.Catch/CatchRuleset.cs
@@ -3,7 +3,6 @@
 
 using System;
 using System.Collections.Generic;
-using osu.Framework.Extensions.EnumExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Input.Bindings;
@@ -62,43 +61,43 @@ namespace osu.Game.Rulesets.Catch
 
         public override IEnumerable<Mod> ConvertFromLegacyMods(LegacyMods mods)
         {
-            if (mods.HasFlagFast(LegacyMods.Nightcore))
+            if (mods.HasFlag(LegacyMods.Nightcore))
                 yield return new CatchModNightcore();
-            else if (mods.HasFlagFast(LegacyMods.DoubleTime))
+            else if (mods.HasFlag(LegacyMods.DoubleTime))
                 yield return new CatchModDoubleTime();
 
-            if (mods.HasFlagFast(LegacyMods.Perfect))
+            if (mods.HasFlag(LegacyMods.Perfect))
                 yield return new CatchModPerfect();
-            else if (mods.HasFlagFast(LegacyMods.SuddenDeath))
+            else if (mods.HasFlag(LegacyMods.SuddenDeath))
                 yield return new CatchModSuddenDeath();
 
-            if (mods.HasFlagFast(LegacyMods.Cinema))
+            if (mods.HasFlag(LegacyMods.Cinema))
                 yield return new CatchModCinema();
-            else if (mods.HasFlagFast(LegacyMods.Autoplay))
+            else if (mods.HasFlag(LegacyMods.Autoplay))
                 yield return new CatchModAutoplay();
 
-            if (mods.HasFlagFast(LegacyMods.Easy))
+            if (mods.HasFlag(LegacyMods.Easy))
                 yield return new CatchModEasy();
 
-            if (mods.HasFlagFast(LegacyMods.Flashlight))
+            if (mods.HasFlag(LegacyMods.Flashlight))
                 yield return new CatchModFlashlight();
 
-            if (mods.HasFlagFast(LegacyMods.HalfTime))
+            if (mods.HasFlag(LegacyMods.HalfTime))
                 yield return new CatchModHalfTime();
 
-            if (mods.HasFlagFast(LegacyMods.HardRock))
+            if (mods.HasFlag(LegacyMods.HardRock))
                 yield return new CatchModHardRock();
 
-            if (mods.HasFlagFast(LegacyMods.Hidden))
+            if (mods.HasFlag(LegacyMods.Hidden))
                 yield return new CatchModHidden();
 
-            if (mods.HasFlagFast(LegacyMods.NoFail))
+            if (mods.HasFlag(LegacyMods.NoFail))
                 yield return new CatchModNoFail();
 
-            if (mods.HasFlagFast(LegacyMods.Relax))
+            if (mods.HasFlag(LegacyMods.Relax))
                 yield return new CatchModRelax();
 
-            if (mods.HasFlagFast(LegacyMods.ScoreV2))
+            if (mods.HasFlag(LegacyMods.ScoreV2))
                 yield return new ModScoreV2();
         }
 
diff --git a/osu.Game.Rulesets.Catch/Edit/CatchHitObjectComposer.cs b/osu.Game.Rulesets.Catch/Edit/CatchHitObjectComposer.cs
index 4172720ada..83f48816f9 100644
--- a/osu.Game.Rulesets.Catch/Edit/CatchHitObjectComposer.cs
+++ b/osu.Game.Rulesets.Catch/Edit/CatchHitObjectComposer.cs
@@ -5,7 +5,6 @@ using System.Collections.Generic;
 using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.EnumExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Input.Bindings;
 using osu.Framework.Input.Events;
@@ -121,7 +120,7 @@ namespace osu.Game.Rulesets.Catch.Edit
 
             result.ScreenSpacePosition.X = screenSpacePosition.X;
 
-            if (snapType.HasFlagFast(SnapType.RelativeGrids))
+            if (snapType.HasFlag(SnapType.RelativeGrids))
             {
                 if (distanceSnapGrid.IsPresent && distanceSnapGrid.GetSnappedPosition(result.ScreenSpacePosition) is SnapResult snapResult &&
                     Vector2.Distance(snapResult.ScreenSpacePosition, result.ScreenSpacePosition) < distance_snap_radius)
diff --git a/osu.Game.Rulesets.Mania.Tests/TestSceneNotes.cs b/osu.Game.Rulesets.Mania.Tests/TestSceneNotes.cs
index 31ff57395c..990f545ee4 100644
--- a/osu.Game.Rulesets.Mania.Tests/TestSceneNotes.cs
+++ b/osu.Game.Rulesets.Mania.Tests/TestSceneNotes.cs
@@ -8,7 +8,6 @@ using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Extensions.Color4Extensions;
-using osu.Framework.Extensions.EnumExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
@@ -100,7 +99,7 @@ namespace osu.Game.Rulesets.Mania.Tests
         }
 
         private bool verifyAnchors(DrawableHitObject hitObject, Anchor expectedAnchor)
-            => hitObject.Anchor.HasFlagFast(expectedAnchor) && hitObject.Origin.HasFlagFast(expectedAnchor);
+            => hitObject.Anchor.HasFlag(expectedAnchor) && hitObject.Origin.HasFlag(expectedAnchor);
 
         private bool verifyAnchors(DrawableHoldNote holdNote, Anchor expectedAnchor)
             => verifyAnchors((DrawableHitObject)holdNote, expectedAnchor) && holdNote.NestedHitObjects.All(n => verifyAnchors(n, expectedAnchor));
diff --git a/osu.Game.Rulesets.Mania/Beatmaps/Patterns/Legacy/HitObjectPatternGenerator.cs b/osu.Game.Rulesets.Mania/Beatmaps/Patterns/Legacy/HitObjectPatternGenerator.cs
index ad45a3fb21..9880369dfb 100644
--- a/osu.Game.Rulesets.Mania/Beatmaps/Patterns/Legacy/HitObjectPatternGenerator.cs
+++ b/osu.Game.Rulesets.Mania/Beatmaps/Patterns/Legacy/HitObjectPatternGenerator.cs
@@ -4,7 +4,6 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
-using osu.Framework.Extensions.EnumExtensions;
 using osuTK;
 using osu.Game.Audio;
 using osu.Game.Beatmaps;
@@ -79,7 +78,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
             else
                 convertType |= PatternType.LowProbability;
 
-            if (!convertType.HasFlagFast(PatternType.KeepSingle))
+            if (!convertType.HasFlag(PatternType.KeepSingle))
             {
                 if (HitObject.Samples.Any(s => s.Name == HitSampleInfo.HIT_FINISH) && TotalColumns != 8)
                     convertType |= PatternType.Mirror;
@@ -102,7 +101,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
 
                 int lastColumn = PreviousPattern.HitObjects.FirstOrDefault()?.Column ?? 0;
 
-                if (convertType.HasFlagFast(PatternType.Reverse) && PreviousPattern.HitObjects.Any())
+                if (convertType.HasFlag(PatternType.Reverse) && PreviousPattern.HitObjects.Any())
                 {
                     // Generate a new pattern by copying the last hit objects in reverse-column order
                     for (int i = RandomStart; i < TotalColumns; i++)
@@ -114,7 +113,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
                     return pattern;
                 }
 
-                if (convertType.HasFlagFast(PatternType.Cycle) && PreviousPattern.HitObjects.Count() == 1
+                if (convertType.HasFlag(PatternType.Cycle) && PreviousPattern.HitObjects.Count() == 1
                                                                // If we convert to 7K + 1, let's not overload the special key
                                                                && (TotalColumns != 8 || lastColumn != 0)
                                                                // Make sure the last column was not the centre column
@@ -127,7 +126,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
                     return pattern;
                 }
 
-                if (convertType.HasFlagFast(PatternType.ForceStack) && PreviousPattern.HitObjects.Any())
+                if (convertType.HasFlag(PatternType.ForceStack) && PreviousPattern.HitObjects.Any())
                 {
                     // Generate a new pattern by placing on the already filled columns
                     for (int i = RandomStart; i < TotalColumns; i++)
@@ -141,7 +140,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
 
                 if (PreviousPattern.HitObjects.Count() == 1)
                 {
-                    if (convertType.HasFlagFast(PatternType.Stair))
+                    if (convertType.HasFlag(PatternType.Stair))
                     {
                         // Generate a new pattern by placing on the next column, cycling back to the start if there is no "next"
                         int targetColumn = lastColumn + 1;
@@ -152,7 +151,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
                         return pattern;
                     }
 
-                    if (convertType.HasFlagFast(PatternType.ReverseStair))
+                    if (convertType.HasFlag(PatternType.ReverseStair))
                     {
                         // Generate a new pattern by placing on the previous column, cycling back to the end if there is no "previous"
                         int targetColumn = lastColumn - 1;
@@ -164,10 +163,10 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
                     }
                 }
 
-                if (convertType.HasFlagFast(PatternType.KeepSingle))
+                if (convertType.HasFlag(PatternType.KeepSingle))
                     return generateRandomNotes(1);
 
-                if (convertType.HasFlagFast(PatternType.Mirror))
+                if (convertType.HasFlag(PatternType.Mirror))
                 {
                     if (ConversionDifficulty > 6.5)
                         return generateRandomPatternWithMirrored(0.12, 0.38, 0.12);
@@ -179,7 +178,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
 
                 if (ConversionDifficulty > 6.5)
                 {
-                    if (convertType.HasFlagFast(PatternType.LowProbability))
+                    if (convertType.HasFlag(PatternType.LowProbability))
                         return generateRandomPattern(0.78, 0.42, 0, 0);
 
                     return generateRandomPattern(1, 0.62, 0, 0);
@@ -187,7 +186,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
 
                 if (ConversionDifficulty > 4)
                 {
-                    if (convertType.HasFlagFast(PatternType.LowProbability))
+                    if (convertType.HasFlag(PatternType.LowProbability))
                         return generateRandomPattern(0.35, 0.08, 0, 0);
 
                     return generateRandomPattern(0.52, 0.15, 0, 0);
@@ -195,7 +194,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
 
                 if (ConversionDifficulty > 2)
                 {
-                    if (convertType.HasFlagFast(PatternType.LowProbability))
+                    if (convertType.HasFlag(PatternType.LowProbability))
                         return generateRandomPattern(0.18, 0, 0, 0);
 
                     return generateRandomPattern(0.45, 0, 0, 0);
@@ -208,9 +207,9 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
 
             foreach (var obj in p.HitObjects)
             {
-                if (convertType.HasFlagFast(PatternType.Stair) && obj.Column == TotalColumns - 1)
+                if (convertType.HasFlag(PatternType.Stair) && obj.Column == TotalColumns - 1)
                     StairType = PatternType.ReverseStair;
-                if (convertType.HasFlagFast(PatternType.ReverseStair) && obj.Column == RandomStart)
+                if (convertType.HasFlag(PatternType.ReverseStair) && obj.Column == RandomStart)
                     StairType = PatternType.Stair;
             }
 
@@ -230,7 +229,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
         {
             var pattern = new Pattern();
 
-            bool allowStacking = !convertType.HasFlagFast(PatternType.ForceNotStack);
+            bool allowStacking = !convertType.HasFlag(PatternType.ForceNotStack);
 
             if (!allowStacking)
                 noteCount = Math.Min(noteCount, TotalColumns - RandomStart - PreviousPattern.ColumnWithObjects);
@@ -250,7 +249,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
 
             int getNextColumn(int last)
             {
-                if (convertType.HasFlagFast(PatternType.Gathered))
+                if (convertType.HasFlag(PatternType.Gathered))
                 {
                     last++;
                     if (last == TotalColumns)
@@ -297,7 +296,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
         /// <returns>The <see cref="Pattern"/> containing the hit objects.</returns>
         private Pattern generateRandomPatternWithMirrored(double centreProbability, double p2, double p3)
         {
-            if (convertType.HasFlagFast(PatternType.ForceNotStack))
+            if (convertType.HasFlag(PatternType.ForceNotStack))
                 return generateRandomPattern(1 / 2f + p2 / 2, p2, (p2 + p3) / 2, p3);
 
             var pattern = new Pattern();
diff --git a/osu.Game.Rulesets.Mania/Beatmaps/Patterns/Legacy/PathObjectPatternGenerator.cs b/osu.Game.Rulesets.Mania/Beatmaps/Patterns/Legacy/PathObjectPatternGenerator.cs
index 6d593a75e7..c54da74424 100644
--- a/osu.Game.Rulesets.Mania/Beatmaps/Patterns/Legacy/PathObjectPatternGenerator.cs
+++ b/osu.Game.Rulesets.Mania/Beatmaps/Patterns/Legacy/PathObjectPatternGenerator.cs
@@ -7,7 +7,6 @@ using System;
 using System.Collections.Generic;
 using System.Diagnostics;
 using System.Linq;
-using osu.Framework.Extensions.EnumExtensions;
 using osu.Game.Audio;
 using osu.Game.Beatmaps;
 using osu.Game.Beatmaps.ControlPoints;
@@ -139,7 +138,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
 
             if (ConversionDifficulty > 6.5)
             {
-                if (convertType.HasFlagFast(PatternType.LowProbability))
+                if (convertType.HasFlag(PatternType.LowProbability))
                     return generateNRandomNotes(StartTime, 0.78, 0.3, 0);
 
                 return generateNRandomNotes(StartTime, 0.85, 0.36, 0.03);
@@ -147,7 +146,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
 
             if (ConversionDifficulty > 4)
             {
-                if (convertType.HasFlagFast(PatternType.LowProbability))
+                if (convertType.HasFlag(PatternType.LowProbability))
                     return generateNRandomNotes(StartTime, 0.43, 0.08, 0);
 
                 return generateNRandomNotes(StartTime, 0.56, 0.18, 0);
@@ -155,13 +154,13 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
 
             if (ConversionDifficulty > 2.5)
             {
-                if (convertType.HasFlagFast(PatternType.LowProbability))
+                if (convertType.HasFlag(PatternType.LowProbability))
                     return generateNRandomNotes(StartTime, 0.3, 0, 0);
 
                 return generateNRandomNotes(StartTime, 0.37, 0.08, 0);
             }
 
-            if (convertType.HasFlagFast(PatternType.LowProbability))
+            if (convertType.HasFlag(PatternType.LowProbability))
                 return generateNRandomNotes(StartTime, 0.17, 0, 0);
 
             return generateNRandomNotes(StartTime, 0.27, 0, 0);
@@ -219,7 +218,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
             var pattern = new Pattern();
 
             int nextColumn = GetColumn((HitObject as IHasXPosition)?.X ?? 0, true);
-            if (convertType.HasFlagFast(PatternType.ForceNotStack) && PreviousPattern.ColumnWithObjects < TotalColumns)
+            if (convertType.HasFlag(PatternType.ForceNotStack) && PreviousPattern.ColumnWithObjects < TotalColumns)
                 nextColumn = FindAvailableColumn(nextColumn, PreviousPattern);
 
             int lastColumn = nextColumn;
@@ -371,7 +370,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
 
             static bool isDoubleSample(HitSampleInfo sample) => sample.Name == HitSampleInfo.HIT_CLAP || sample.Name == HitSampleInfo.HIT_FINISH;
 
-            bool canGenerateTwoNotes = !convertType.HasFlagFast(PatternType.LowProbability);
+            bool canGenerateTwoNotes = !convertType.HasFlag(PatternType.LowProbability);
             canGenerateTwoNotes &= HitObject.Samples.Any(isDoubleSample) || sampleInfoListAt(StartTime).Any(isDoubleSample);
 
             if (canGenerateTwoNotes)
@@ -404,7 +403,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
             int endTime = startTime + SegmentDuration * SpanCount;
 
             int nextColumn = GetColumn((HitObject as IHasXPosition)?.X ?? 0, true);
-            if (convertType.HasFlagFast(PatternType.ForceNotStack) && PreviousPattern.ColumnWithObjects < TotalColumns)
+            if (convertType.HasFlag(PatternType.ForceNotStack) && PreviousPattern.ColumnWithObjects < TotalColumns)
                 nextColumn = FindAvailableColumn(nextColumn, PreviousPattern);
 
             for (int i = 0; i < columnRepeat; i++)
@@ -433,7 +432,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
             var pattern = new Pattern();
 
             int holdColumn = GetColumn((HitObject as IHasXPosition)?.X ?? 0, true);
-            if (convertType.HasFlagFast(PatternType.ForceNotStack) && PreviousPattern.ColumnWithObjects < TotalColumns)
+            if (convertType.HasFlag(PatternType.ForceNotStack) && PreviousPattern.ColumnWithObjects < TotalColumns)
                 holdColumn = FindAvailableColumn(holdColumn, PreviousPattern);
 
             // Create the hold note
diff --git a/osu.Game.Rulesets.Mania/ManiaRuleset.cs b/osu.Game.Rulesets.Mania/ManiaRuleset.cs
index 667002533d..0dcbb36c77 100644
--- a/osu.Game.Rulesets.Mania/ManiaRuleset.cs
+++ b/osu.Game.Rulesets.Mania/ManiaRuleset.cs
@@ -4,7 +4,6 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
-using osu.Framework.Extensions.EnumExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Input.Bindings;
@@ -89,79 +88,79 @@ namespace osu.Game.Rulesets.Mania
 
         public override IEnumerable<Mod> ConvertFromLegacyMods(LegacyMods mods)
         {
-            if (mods.HasFlagFast(LegacyMods.Nightcore))
+            if (mods.HasFlag(LegacyMods.Nightcore))
                 yield return new ManiaModNightcore();
-            else if (mods.HasFlagFast(LegacyMods.DoubleTime))
+            else if (mods.HasFlag(LegacyMods.DoubleTime))
                 yield return new ManiaModDoubleTime();
 
-            if (mods.HasFlagFast(LegacyMods.Perfect))
+            if (mods.HasFlag(LegacyMods.Perfect))
                 yield return new ManiaModPerfect();
-            else if (mods.HasFlagFast(LegacyMods.SuddenDeath))
+            else if (mods.HasFlag(LegacyMods.SuddenDeath))
                 yield return new ManiaModSuddenDeath();
 
-            if (mods.HasFlagFast(LegacyMods.Cinema))
+            if (mods.HasFlag(LegacyMods.Cinema))
                 yield return new ManiaModCinema();
-            else if (mods.HasFlagFast(LegacyMods.Autoplay))
+            else if (mods.HasFlag(LegacyMods.Autoplay))
                 yield return new ManiaModAutoplay();
 
-            if (mods.HasFlagFast(LegacyMods.Easy))
+            if (mods.HasFlag(LegacyMods.Easy))
                 yield return new ManiaModEasy();
 
-            if (mods.HasFlagFast(LegacyMods.FadeIn))
+            if (mods.HasFlag(LegacyMods.FadeIn))
                 yield return new ManiaModFadeIn();
 
-            if (mods.HasFlagFast(LegacyMods.Flashlight))
+            if (mods.HasFlag(LegacyMods.Flashlight))
                 yield return new ManiaModFlashlight();
 
-            if (mods.HasFlagFast(LegacyMods.HalfTime))
+            if (mods.HasFlag(LegacyMods.HalfTime))
                 yield return new ManiaModHalfTime();
 
-            if (mods.HasFlagFast(LegacyMods.HardRock))
+            if (mods.HasFlag(LegacyMods.HardRock))
                 yield return new ManiaModHardRock();
 
-            if (mods.HasFlagFast(LegacyMods.Hidden))
+            if (mods.HasFlag(LegacyMods.Hidden))
                 yield return new ManiaModHidden();
 
-            if (mods.HasFlagFast(LegacyMods.Key1))
+            if (mods.HasFlag(LegacyMods.Key1))
                 yield return new ManiaModKey1();
 
-            if (mods.HasFlagFast(LegacyMods.Key2))
+            if (mods.HasFlag(LegacyMods.Key2))
                 yield return new ManiaModKey2();
 
-            if (mods.HasFlagFast(LegacyMods.Key3))
+            if (mods.HasFlag(LegacyMods.Key3))
                 yield return new ManiaModKey3();
 
-            if (mods.HasFlagFast(LegacyMods.Key4))
+            if (mods.HasFlag(LegacyMods.Key4))
                 yield return new ManiaModKey4();
 
-            if (mods.HasFlagFast(LegacyMods.Key5))
+            if (mods.HasFlag(LegacyMods.Key5))
                 yield return new ManiaModKey5();
 
-            if (mods.HasFlagFast(LegacyMods.Key6))
+            if (mods.HasFlag(LegacyMods.Key6))
                 yield return new ManiaModKey6();
 
-            if (mods.HasFlagFast(LegacyMods.Key7))
+            if (mods.HasFlag(LegacyMods.Key7))
                 yield return new ManiaModKey7();
 
-            if (mods.HasFlagFast(LegacyMods.Key8))
+            if (mods.HasFlag(LegacyMods.Key8))
                 yield return new ManiaModKey8();
 
-            if (mods.HasFlagFast(LegacyMods.Key9))
+            if (mods.HasFlag(LegacyMods.Key9))
                 yield return new ManiaModKey9();
 
-            if (mods.HasFlagFast(LegacyMods.KeyCoop))
+            if (mods.HasFlag(LegacyMods.KeyCoop))
                 yield return new ManiaModDualStages();
 
-            if (mods.HasFlagFast(LegacyMods.NoFail))
+            if (mods.HasFlag(LegacyMods.NoFail))
                 yield return new ManiaModNoFail();
 
-            if (mods.HasFlagFast(LegacyMods.Random))
+            if (mods.HasFlag(LegacyMods.Random))
                 yield return new ManiaModRandom();
 
-            if (mods.HasFlagFast(LegacyMods.Mirror))
+            if (mods.HasFlag(LegacyMods.Mirror))
                 yield return new ManiaModMirror();
 
-            if (mods.HasFlagFast(LegacyMods.ScoreV2))
+            if (mods.HasFlag(LegacyMods.ScoreV2))
                 yield return new ModScoreV2();
         }
 
diff --git a/osu.Game.Rulesets.Osu/Edit/OsuHitObjectComposer.cs b/osu.Game.Rulesets.Osu/Edit/OsuHitObjectComposer.cs
index f93874481d..784132ec4c 100644
--- a/osu.Game.Rulesets.Osu/Edit/OsuHitObjectComposer.cs
+++ b/osu.Game.Rulesets.Osu/Edit/OsuHitObjectComposer.cs
@@ -10,7 +10,6 @@ using System.Text.RegularExpressions;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Caching;
-using osu.Framework.Extensions.EnumExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Sprites;
@@ -194,7 +193,7 @@ namespace osu.Game.Rulesets.Osu.Edit
 
         public override SnapResult FindSnappedPositionAndTime(Vector2 screenSpacePosition, SnapType snapType = SnapType.All)
         {
-            if (snapType.HasFlagFast(SnapType.NearbyObjects) && snapToVisibleBlueprints(screenSpacePosition, out var snapResult))
+            if (snapType.HasFlag(SnapType.NearbyObjects) && snapToVisibleBlueprints(screenSpacePosition, out var snapResult))
             {
                 // In the case of snapping to nearby objects, a time value is not provided.
                 // This matches the stable editor (which also uses current time), but with the introduction of time-snapping distance snap
@@ -204,7 +203,7 @@ namespace osu.Game.Rulesets.Osu.Edit
                 // We want to ensure that in this particular case, the time-snapping component of distance snap is still applied.
                 // The easiest way to ensure this is to attempt application of distance snap after a nearby object is found, and copy over
                 // the time value if the proposed positions are roughly the same.
-                if (snapType.HasFlagFast(SnapType.RelativeGrids) && DistanceSnapProvider.DistanceSnapToggle.Value == TernaryState.True && distanceSnapGrid != null)
+                if (snapType.HasFlag(SnapType.RelativeGrids) && DistanceSnapProvider.DistanceSnapToggle.Value == TernaryState.True && distanceSnapGrid != null)
                 {
                     (Vector2 distanceSnappedPosition, double distanceSnappedTime) = distanceSnapGrid.GetSnappedPosition(distanceSnapGrid.ToLocalSpace(snapResult.ScreenSpacePosition));
                     if (Precision.AlmostEquals(distanceSnapGrid.ToScreenSpace(distanceSnappedPosition), snapResult.ScreenSpacePosition, 1))
@@ -216,7 +215,7 @@ namespace osu.Game.Rulesets.Osu.Edit
 
             SnapResult result = base.FindSnappedPositionAndTime(screenSpacePosition, snapType);
 
-            if (snapType.HasFlagFast(SnapType.RelativeGrids))
+            if (snapType.HasFlag(SnapType.RelativeGrids))
             {
                 if (DistanceSnapProvider.DistanceSnapToggle.Value == TernaryState.True && distanceSnapGrid != null)
                 {
@@ -227,7 +226,7 @@ namespace osu.Game.Rulesets.Osu.Edit
                 }
             }
 
-            if (snapType.HasFlagFast(SnapType.GlobalGrids))
+            if (snapType.HasFlag(SnapType.GlobalGrids))
             {
                 if (rectangularGridSnapToggle.Value == TernaryState.True)
                 {
diff --git a/osu.Game.Rulesets.Osu/OsuRuleset.cs b/osu.Game.Rulesets.Osu/OsuRuleset.cs
index 6752712be1..73f9be3fdc 100644
--- a/osu.Game.Rulesets.Osu/OsuRuleset.cs
+++ b/osu.Game.Rulesets.Osu/OsuRuleset.cs
@@ -4,7 +4,6 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
-using osu.Framework.Extensions.EnumExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Input.Bindings;
@@ -70,55 +69,55 @@ namespace osu.Game.Rulesets.Osu
 
         public override IEnumerable<Mod> ConvertFromLegacyMods(LegacyMods mods)
         {
-            if (mods.HasFlagFast(LegacyMods.Nightcore))
+            if (mods.HasFlag(LegacyMods.Nightcore))
                 yield return new OsuModNightcore();
-            else if (mods.HasFlagFast(LegacyMods.DoubleTime))
+            else if (mods.HasFlag(LegacyMods.DoubleTime))
                 yield return new OsuModDoubleTime();
 
-            if (mods.HasFlagFast(LegacyMods.Perfect))
+            if (mods.HasFlag(LegacyMods.Perfect))
                 yield return new OsuModPerfect();
-            else if (mods.HasFlagFast(LegacyMods.SuddenDeath))
+            else if (mods.HasFlag(LegacyMods.SuddenDeath))
                 yield return new OsuModSuddenDeath();
 
-            if (mods.HasFlagFast(LegacyMods.Autopilot))
+            if (mods.HasFlag(LegacyMods.Autopilot))
                 yield return new OsuModAutopilot();
 
-            if (mods.HasFlagFast(LegacyMods.Cinema))
+            if (mods.HasFlag(LegacyMods.Cinema))
                 yield return new OsuModCinema();
-            else if (mods.HasFlagFast(LegacyMods.Autoplay))
+            else if (mods.HasFlag(LegacyMods.Autoplay))
                 yield return new OsuModAutoplay();
 
-            if (mods.HasFlagFast(LegacyMods.Easy))
+            if (mods.HasFlag(LegacyMods.Easy))
                 yield return new OsuModEasy();
 
-            if (mods.HasFlagFast(LegacyMods.Flashlight))
+            if (mods.HasFlag(LegacyMods.Flashlight))
                 yield return new OsuModFlashlight();
 
-            if (mods.HasFlagFast(LegacyMods.HalfTime))
+            if (mods.HasFlag(LegacyMods.HalfTime))
                 yield return new OsuModHalfTime();
 
-            if (mods.HasFlagFast(LegacyMods.HardRock))
+            if (mods.HasFlag(LegacyMods.HardRock))
                 yield return new OsuModHardRock();
 
-            if (mods.HasFlagFast(LegacyMods.Hidden))
+            if (mods.HasFlag(LegacyMods.Hidden))
                 yield return new OsuModHidden();
 
-            if (mods.HasFlagFast(LegacyMods.NoFail))
+            if (mods.HasFlag(LegacyMods.NoFail))
                 yield return new OsuModNoFail();
 
-            if (mods.HasFlagFast(LegacyMods.Relax))
+            if (mods.HasFlag(LegacyMods.Relax))
                 yield return new OsuModRelax();
 
-            if (mods.HasFlagFast(LegacyMods.SpunOut))
+            if (mods.HasFlag(LegacyMods.SpunOut))
                 yield return new OsuModSpunOut();
 
-            if (mods.HasFlagFast(LegacyMods.Target))
+            if (mods.HasFlag(LegacyMods.Target))
                 yield return new OsuModTargetPractice();
 
-            if (mods.HasFlagFast(LegacyMods.TouchDevice))
+            if (mods.HasFlag(LegacyMods.TouchDevice))
                 yield return new OsuModTouchDevice();
 
-            if (mods.HasFlagFast(LegacyMods.ScoreV2))
+            if (mods.HasFlag(LegacyMods.ScoreV2))
                 yield return new ModScoreV2();
         }
 
diff --git a/osu.Game.Rulesets.Osu/UI/Cursor/CursorTrail.cs b/osu.Game.Rulesets.Osu/UI/Cursor/CursorTrail.cs
index 95a052dadb..30a77db5a1 100644
--- a/osu.Game.Rulesets.Osu/UI/Cursor/CursorTrail.cs
+++ b/osu.Game.Rulesets.Osu/UI/Cursor/CursorTrail.cs
@@ -7,7 +7,6 @@ using System;
 using System.Diagnostics;
 using System.Runtime.InteropServices;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.EnumExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Primitives;
 using osu.Framework.Graphics.Rendering;
@@ -243,14 +242,14 @@ namespace osu.Game.Rulesets.Osu.UI.Cursor
 
                 originPosition = Vector2.Zero;
 
-                if (Source.TrailOrigin.HasFlagFast(Anchor.x1))
+                if (Source.TrailOrigin.HasFlag(Anchor.x1))
                     originPosition.X = 0.5f;
-                else if (Source.TrailOrigin.HasFlagFast(Anchor.x2))
+                else if (Source.TrailOrigin.HasFlag(Anchor.x2))
                     originPosition.X = 1f;
 
-                if (Source.TrailOrigin.HasFlagFast(Anchor.y1))
+                if (Source.TrailOrigin.HasFlag(Anchor.y1))
                     originPosition.Y = 0.5f;
-                else if (Source.TrailOrigin.HasFlagFast(Anchor.y2))
+                else if (Source.TrailOrigin.HasFlag(Anchor.y2))
                     originPosition.Y = 1f;
 
                 Source.parts.CopyTo(parts, 0);
diff --git a/osu.Game.Rulesets.Taiko/TaikoRuleset.cs b/osu.Game.Rulesets.Taiko/TaikoRuleset.cs
index 13501c6192..2053a11426 100644
--- a/osu.Game.Rulesets.Taiko/TaikoRuleset.cs
+++ b/osu.Game.Rulesets.Taiko/TaikoRuleset.cs
@@ -4,7 +4,6 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
-using osu.Framework.Extensions.EnumExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Input.Bindings;
@@ -79,43 +78,43 @@ namespace osu.Game.Rulesets.Taiko
 
         public override IEnumerable<Mod> ConvertFromLegacyMods(LegacyMods mods)
         {
-            if (mods.HasFlagFast(LegacyMods.Nightcore))
+            if (mods.HasFlag(LegacyMods.Nightcore))
                 yield return new TaikoModNightcore();
-            else if (mods.HasFlagFast(LegacyMods.DoubleTime))
+            else if (mods.HasFlag(LegacyMods.DoubleTime))
                 yield return new TaikoModDoubleTime();
 
-            if (mods.HasFlagFast(LegacyMods.Perfect))
+            if (mods.HasFlag(LegacyMods.Perfect))
                 yield return new TaikoModPerfect();
-            else if (mods.HasFlagFast(LegacyMods.SuddenDeath))
+            else if (mods.HasFlag(LegacyMods.SuddenDeath))
                 yield return new TaikoModSuddenDeath();
 
-            if (mods.HasFlagFast(LegacyMods.Cinema))
+            if (mods.HasFlag(LegacyMods.Cinema))
                 yield return new TaikoModCinema();
-            else if (mods.HasFlagFast(LegacyMods.Autoplay))
+            else if (mods.HasFlag(LegacyMods.Autoplay))
                 yield return new TaikoModAutoplay();
 
-            if (mods.HasFlagFast(LegacyMods.Easy))
+            if (mods.HasFlag(LegacyMods.Easy))
                 yield return new TaikoModEasy();
 
-            if (mods.HasFlagFast(LegacyMods.Flashlight))
+            if (mods.HasFlag(LegacyMods.Flashlight))
                 yield return new TaikoModFlashlight();
 
-            if (mods.HasFlagFast(LegacyMods.HalfTime))
+            if (mods.HasFlag(LegacyMods.HalfTime))
                 yield return new TaikoModHalfTime();
 
-            if (mods.HasFlagFast(LegacyMods.HardRock))
+            if (mods.HasFlag(LegacyMods.HardRock))
                 yield return new TaikoModHardRock();
 
-            if (mods.HasFlagFast(LegacyMods.Hidden))
+            if (mods.HasFlag(LegacyMods.Hidden))
                 yield return new TaikoModHidden();
 
-            if (mods.HasFlagFast(LegacyMods.NoFail))
+            if (mods.HasFlag(LegacyMods.NoFail))
                 yield return new TaikoModNoFail();
 
-            if (mods.HasFlagFast(LegacyMods.Relax))
+            if (mods.HasFlag(LegacyMods.Relax))
                 yield return new TaikoModRelax();
 
-            if (mods.HasFlagFast(LegacyMods.ScoreV2))
+            if (mods.HasFlag(LegacyMods.ScoreV2))
                 yield return new ModScoreV2();
         }
 
diff --git a/osu.Game/Beatmaps/Formats/LegacyBeatmapDecoder.cs b/osu.Game/Beatmaps/Formats/LegacyBeatmapDecoder.cs
index c2f4097889..011aca5d9c 100644
--- a/osu.Game/Beatmaps/Formats/LegacyBeatmapDecoder.cs
+++ b/osu.Game/Beatmaps/Formats/LegacyBeatmapDecoder.cs
@@ -6,7 +6,6 @@ using System.Collections.Generic;
 using System.IO;
 using System.Linq;
 using osu.Framework.Extensions;
-using osu.Framework.Extensions.EnumExtensions;
 using osu.Framework.Logging;
 using osu.Game.Audio;
 using osu.Game.Beatmaps.ControlPoints;
@@ -528,8 +527,8 @@ namespace osu.Game.Beatmaps.Formats
             if (split.Length >= 8)
             {
                 LegacyEffectFlags effectFlags = (LegacyEffectFlags)Parsing.ParseInt(split[7]);
-                kiaiMode = effectFlags.HasFlagFast(LegacyEffectFlags.Kiai);
-                omitFirstBarSignature = effectFlags.HasFlagFast(LegacyEffectFlags.OmitFirstBarLine);
+                kiaiMode = effectFlags.HasFlag(LegacyEffectFlags.Kiai);
+                omitFirstBarSignature = effectFlags.HasFlag(LegacyEffectFlags.OmitFirstBarLine);
             }
 
             string stringSampleSet = sampleSet.ToString().ToLowerInvariant();
diff --git a/osu.Game/Database/LegacyImportManager.cs b/osu.Game/Database/LegacyImportManager.cs
index 7e1641d16f..5c2f220045 100644
--- a/osu.Game/Database/LegacyImportManager.cs
+++ b/osu.Game/Database/LegacyImportManager.cs
@@ -10,7 +10,6 @@ using System.Threading;
 using System.Threading.Tasks;
 using osu.Framework;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.EnumExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Platform;
 using osu.Game.Beatmaps;
@@ -164,13 +163,13 @@ namespace osu.Game.Database
             var importTasks = new List<Task>();
 
             Task beatmapImportTask = Task.CompletedTask;
-            if (content.HasFlagFast(StableContent.Beatmaps))
+            if (content.HasFlag(StableContent.Beatmaps))
                 importTasks.Add(beatmapImportTask = new LegacyBeatmapImporter(beatmaps).ImportFromStableAsync(stableStorage));
 
-            if (content.HasFlagFast(StableContent.Skins))
+            if (content.HasFlag(StableContent.Skins))
                 importTasks.Add(new LegacySkinImporter(skins).ImportFromStableAsync(stableStorage));
 
-            if (content.HasFlagFast(StableContent.Collections))
+            if (content.HasFlag(StableContent.Collections))
             {
                 importTasks.Add(beatmapImportTask.ContinueWith(_ => new LegacyCollectionImporter(realmAccess)
                 {
@@ -180,7 +179,7 @@ namespace osu.Game.Database
                 }.ImportFromStorage(stableStorage), TaskContinuationOptions.OnlyOnRanToCompletion));
             }
 
-            if (content.HasFlagFast(StableContent.Scores))
+            if (content.HasFlag(StableContent.Scores))
                 importTasks.Add(beatmapImportTask.ContinueWith(_ => new LegacyScoreImporter(scores).ImportFromStableAsync(stableStorage), TaskContinuationOptions.OnlyOnRanToCompletion));
 
             await Task.WhenAll(importTasks.ToArray()).ConfigureAwait(false);
diff --git a/osu.Game/Database/RealmAccess.cs b/osu.Game/Database/RealmAccess.cs
index 1ece81be50..ff76142bcc 100644
--- a/osu.Game/Database/RealmAccess.cs
+++ b/osu.Game/Database/RealmAccess.cs
@@ -15,7 +15,6 @@ using osu.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Development;
 using osu.Framework.Extensions;
-using osu.Framework.Extensions.EnumExtensions;
 using osu.Framework.Input.Bindings;
 using osu.Framework.Logging;
 using osu.Framework.Platform;
@@ -1035,7 +1034,7 @@ namespace osu.Game.Database
 
                             var legacyMods = (LegacyMods)sr.ReadInt32();
 
-                            if (!legacyMods.HasFlagFast(LegacyMods.ScoreV2) || score.APIMods.Any(mod => mod.Acronym == @"SV2"))
+                            if (!legacyMods.HasFlag(LegacyMods.ScoreV2) || score.APIMods.Any(mod => mod.Acronym == @"SV2"))
                                 return;
 
                             score.APIMods = score.APIMods.Append(new APIMod(new ModScoreV2())).ToArray();
diff --git a/osu.Game/Graphics/ParticleSpewer.cs b/osu.Game/Graphics/ParticleSpewer.cs
index 64c70095bf..51fbd134d5 100644
--- a/osu.Game/Graphics/ParticleSpewer.cs
+++ b/osu.Game/Graphics/ParticleSpewer.cs
@@ -6,7 +6,6 @@
 using System;
 using System.Diagnostics;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.EnumExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Primitives;
 using osu.Framework.Graphics.Rendering;
@@ -190,9 +189,9 @@ namespace osu.Game.Graphics
                 float width = Texture.DisplayWidth * scale;
                 float height = Texture.DisplayHeight * scale;
 
-                if (relativePositionAxes.HasFlagFast(Axes.X))
+                if (relativePositionAxes.HasFlag(Axes.X))
                     position.X *= sourceSize.X;
-                if (relativePositionAxes.HasFlagFast(Axes.Y))
+                if (relativePositionAxes.HasFlag(Axes.Y))
                     position.Y *= sourceSize.Y;
 
                 return new RectangleF(
diff --git a/osu.Game/Graphics/UserInterface/TwoLayerButton.cs b/osu.Game/Graphics/UserInterface/TwoLayerButton.cs
index 5532e5c6a7..6f61a14b75 100644
--- a/osu.Game/Graphics/UserInterface/TwoLayerButton.cs
+++ b/osu.Game/Graphics/UserInterface/TwoLayerButton.cs
@@ -12,7 +12,6 @@ using osu.Game.Graphics.Containers;
 using osu.Game.Beatmaps.ControlPoints;
 using osu.Framework.Audio.Track;
 using System;
-using osu.Framework.Extensions.EnumExtensions;
 using osu.Framework.Graphics.Effects;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Input.Events;
@@ -57,15 +56,15 @@ namespace osu.Game.Graphics.UserInterface
             set
             {
                 base.Origin = value;
-                c1.Origin = c1.Anchor = value.HasFlagFast(Anchor.x2) ? Anchor.TopLeft : Anchor.TopRight;
-                c2.Origin = c2.Anchor = value.HasFlagFast(Anchor.x2) ? Anchor.TopRight : Anchor.TopLeft;
+                c1.Origin = c1.Anchor = value.HasFlag(Anchor.x2) ? Anchor.TopLeft : Anchor.TopRight;
+                c2.Origin = c2.Anchor = value.HasFlag(Anchor.x2) ? Anchor.TopRight : Anchor.TopLeft;
 
-                X = value.HasFlagFast(Anchor.x2) ? SIZE_RETRACTED.X * shear.X * 0.5f : 0;
+                X = value.HasFlag(Anchor.x2) ? SIZE_RETRACTED.X * shear.X * 0.5f : 0;
 
                 Remove(c1, false);
                 Remove(c2, false);
-                c1.Depth = value.HasFlagFast(Anchor.x2) ? 0 : 1;
-                c2.Depth = value.HasFlagFast(Anchor.x2) ? 1 : 0;
+                c1.Depth = value.HasFlag(Anchor.x2) ? 0 : 1;
+                c2.Depth = value.HasFlag(Anchor.x2) ? 1 : 0;
                 Add(c1);
                 Add(c2);
             }
diff --git a/osu.Game/Overlays/Music/PlaylistOverlay.cs b/osu.Game/Overlays/Music/PlaylistOverlay.cs
index 6ecd0f51d3..2d03a4a26d 100644
--- a/osu.Game/Overlays/Music/PlaylistOverlay.cs
+++ b/osu.Game/Overlays/Music/PlaylistOverlay.cs
@@ -8,7 +8,6 @@ using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Extensions.Color4Extensions;
-using osu.Framework.Extensions.EnumExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
@@ -131,7 +130,7 @@ namespace osu.Game.Overlays.Music
             filter.Search.HoldFocus = true;
             Schedule(() => filter.Search.TakeFocus());
 
-            this.ResizeTo(new Vector2(1, RelativeSizeAxes.HasFlagFast(Axes.Y) ? 1f : PLAYLIST_HEIGHT), transition_duration, Easing.OutQuint);
+            this.ResizeTo(new Vector2(1, RelativeSizeAxes.HasFlag(Axes.Y) ? 1f : PLAYLIST_HEIGHT), transition_duration, Easing.OutQuint);
             this.FadeIn(transition_duration, Easing.OutQuint);
         }
 
diff --git a/osu.Game/Overlays/SettingsToolboxGroup.cs b/osu.Game/Overlays/SettingsToolboxGroup.cs
index de13bd96d4..53849fa53c 100644
--- a/osu.Game/Overlays/SettingsToolboxGroup.cs
+++ b/osu.Game/Overlays/SettingsToolboxGroup.cs
@@ -4,7 +4,6 @@
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Caching;
-using osu.Framework.Extensions.EnumExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
@@ -161,7 +160,7 @@ namespace osu.Game.Overlays
 
         protected override bool OnInvalidate(Invalidation invalidation, InvalidationSource source)
         {
-            if (invalidation.HasFlagFast(Invalidation.DrawSize))
+            if (invalidation.HasFlag(Invalidation.DrawSize))
                 headerTextVisibilityCache.Invalidate();
 
             return base.OnInvalidate(invalidation, source);
diff --git a/osu.Game/Overlays/SkinEditor/SkinSelectionHandler.cs b/osu.Game/Overlays/SkinEditor/SkinSelectionHandler.cs
index a671e7a76e..722ffd6d07 100644
--- a/osu.Game/Overlays/SkinEditor/SkinSelectionHandler.cs
+++ b/osu.Game/Overlays/SkinEditor/SkinSelectionHandler.cs
@@ -6,7 +6,6 @@ using System.Collections.Generic;
 using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Extensions;
-using osu.Framework.Extensions.EnumExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Primitives;
 using osu.Framework.Graphics.UserInterface;
@@ -145,9 +144,9 @@ namespace osu.Game.Overlays.SkinEditor
                     var blueprintItem = ((Drawable)blueprint.Item);
                     blueprintItem.Scale = Vector2.One;
 
-                    if (blueprintItem.RelativeSizeAxes.HasFlagFast(Axes.X))
+                    if (blueprintItem.RelativeSizeAxes.HasFlag(Axes.X))
                         blueprintItem.Width = 1;
-                    if (blueprintItem.RelativeSizeAxes.HasFlagFast(Axes.Y))
+                    if (blueprintItem.RelativeSizeAxes.HasFlag(Axes.Y))
                         blueprintItem.Height = 1;
                 }
             });
diff --git a/osu.Game/Overlays/SkinEditor/SkinSelectionScaleHandler.cs b/osu.Game/Overlays/SkinEditor/SkinSelectionScaleHandler.cs
index 08df8df7e2..4bfa7fba81 100644
--- a/osu.Game/Overlays/SkinEditor/SkinSelectionScaleHandler.cs
+++ b/osu.Game/Overlays/SkinEditor/SkinSelectionScaleHandler.cs
@@ -7,7 +7,6 @@ using System.Diagnostics;
 using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.EnumExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Utils;
@@ -51,7 +50,7 @@ namespace osu.Game.Overlays.SkinEditor
             CanScaleDiagonally.Value = true;
         }
 
-        private bool allSelectedSupportManualSizing(Axes axis) => selectedItems.All(b => (b as CompositeDrawable)?.AutoSizeAxes.HasFlagFast(axis) == false);
+        private bool allSelectedSupportManualSizing(Axes axis) => selectedItems.All(b => (b as CompositeDrawable)?.AutoSizeAxes.HasFlag(axis) == false);
 
         private Dictionary<Drawable, OriginalDrawableState>? objectsInScale;
         private Vector2? defaultOrigin;
diff --git a/osu.Game/Overlays/Toolbar/ToolbarButton.cs b/osu.Game/Overlays/Toolbar/ToolbarButton.cs
index 1da2e1b744..221282ef13 100644
--- a/osu.Game/Overlays/Toolbar/ToolbarButton.cs
+++ b/osu.Game/Overlays/Toolbar/ToolbarButton.cs
@@ -4,7 +4,6 @@
 using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Extensions.Color4Extensions;
-using osu.Framework.Extensions.EnumExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
@@ -150,9 +149,9 @@ namespace osu.Game.Overlays.Toolbar
                 {
                     Direction = FillDirection.Vertical,
                     RelativeSizeAxes = Axes.Both, // stops us being considered in parent's autosize
-                    Anchor = TooltipAnchor.HasFlagFast(Anchor.x0) ? Anchor.BottomLeft : Anchor.BottomRight,
+                    Anchor = TooltipAnchor.HasFlag(Anchor.x0) ? Anchor.BottomLeft : Anchor.BottomRight,
                     Origin = TooltipAnchor,
-                    Position = new Vector2(TooltipAnchor.HasFlagFast(Anchor.x0) ? 5 : -5, 5),
+                    Position = new Vector2(TooltipAnchor.HasFlag(Anchor.x0) ? 5 : -5, 5),
                     Alpha = 0,
                     Children = new Drawable[]
                     {
diff --git a/osu.Game/Replays/Legacy/LegacyReplayFrame.cs b/osu.Game/Replays/Legacy/LegacyReplayFrame.cs
index f345504ca1..b48fc44963 100644
--- a/osu.Game/Replays/Legacy/LegacyReplayFrame.cs
+++ b/osu.Game/Replays/Legacy/LegacyReplayFrame.cs
@@ -3,7 +3,6 @@
 
 using MessagePack;
 using Newtonsoft.Json;
-using osu.Framework.Extensions.EnumExtensions;
 using osu.Game.Rulesets.Replays;
 using osuTK;
 
@@ -32,23 +31,23 @@ namespace osu.Game.Replays.Legacy
 
         [JsonIgnore]
         [IgnoreMember]
-        public bool MouseLeft1 => ButtonState.HasFlagFast(ReplayButtonState.Left1);
+        public bool MouseLeft1 => ButtonState.HasFlag(ReplayButtonState.Left1);
 
         [JsonIgnore]
         [IgnoreMember]
-        public bool MouseRight1 => ButtonState.HasFlagFast(ReplayButtonState.Right1);
+        public bool MouseRight1 => ButtonState.HasFlag(ReplayButtonState.Right1);
 
         [JsonIgnore]
         [IgnoreMember]
-        public bool MouseLeft2 => ButtonState.HasFlagFast(ReplayButtonState.Left2);
+        public bool MouseLeft2 => ButtonState.HasFlag(ReplayButtonState.Left2);
 
         [JsonIgnore]
         [IgnoreMember]
-        public bool MouseRight2 => ButtonState.HasFlagFast(ReplayButtonState.Right2);
+        public bool MouseRight2 => ButtonState.HasFlag(ReplayButtonState.Right2);
 
         [JsonIgnore]
         [IgnoreMember]
-        public bool Smoke => ButtonState.HasFlagFast(ReplayButtonState.Smoke);
+        public bool Smoke => ButtonState.HasFlag(ReplayButtonState.Smoke);
 
         [Key(3)]
         public ReplayButtonState ButtonState;
diff --git a/osu.Game/Rulesets/Edit/HitObjectComposer.cs b/osu.Game/Rulesets/Edit/HitObjectComposer.cs
index 540e0440c6..5bd720cfba 100644
--- a/osu.Game/Rulesets/Edit/HitObjectComposer.cs
+++ b/osu.Game/Rulesets/Edit/HitObjectComposer.cs
@@ -10,7 +10,6 @@ using System.Linq;
 using JetBrains.Annotations;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.EnumExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
@@ -505,7 +504,7 @@ namespace osu.Game.Rulesets.Edit
             var playfield = PlayfieldAtScreenSpacePosition(screenSpacePosition);
             double? targetTime = null;
 
-            if (snapType.HasFlagFast(SnapType.GlobalGrids))
+            if (snapType.HasFlag(SnapType.GlobalGrids))
             {
                 if (playfield is ScrollingPlayfield scrollingPlayfield)
                 {
diff --git a/osu.Game/Rulesets/Objects/Legacy/ConvertHitObjectParser.cs b/osu.Game/Rulesets/Objects/Legacy/ConvertHitObjectParser.cs
index 66b3033f90..37a87462ca 100644
--- a/osu.Game/Rulesets/Objects/Legacy/ConvertHitObjectParser.cs
+++ b/osu.Game/Rulesets/Objects/Legacy/ConvertHitObjectParser.cs
@@ -12,7 +12,6 @@ using osu.Game.Beatmaps.Formats;
 using osu.Game.Audio;
 using System.Linq;
 using JetBrains.Annotations;
-using osu.Framework.Extensions.EnumExtensions;
 using osu.Framework.Utils;
 using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.Beatmaps.Legacy;
@@ -58,7 +57,7 @@ namespace osu.Game.Rulesets.Objects.Legacy
             int comboOffset = (int)(type & LegacyHitObjectType.ComboOffset) >> 4;
             type &= ~LegacyHitObjectType.ComboOffset;
 
-            bool combo = type.HasFlagFast(LegacyHitObjectType.NewCombo);
+            bool combo = type.HasFlag(LegacyHitObjectType.NewCombo);
             type &= ~LegacyHitObjectType.NewCombo;
 
             var soundType = (LegacyHitSoundType)Parsing.ParseInt(split[4]);
@@ -66,14 +65,14 @@ namespace osu.Game.Rulesets.Objects.Legacy
 
             HitObject result = null;
 
-            if (type.HasFlagFast(LegacyHitObjectType.Circle))
+            if (type.HasFlag(LegacyHitObjectType.Circle))
             {
                 result = CreateHit(pos, combo, comboOffset);
 
                 if (split.Length > 5)
                     readCustomSampleBanks(split[5], bankInfo);
             }
-            else if (type.HasFlagFast(LegacyHitObjectType.Slider))
+            else if (type.HasFlag(LegacyHitObjectType.Slider))
             {
                 double? length = null;
 
@@ -145,7 +144,7 @@ namespace osu.Game.Rulesets.Objects.Legacy
 
                 result = CreateSlider(pos, combo, comboOffset, convertPathString(split[5], pos), length, repeatCount, nodeSamples);
             }
-            else if (type.HasFlagFast(LegacyHitObjectType.Spinner))
+            else if (type.HasFlag(LegacyHitObjectType.Spinner))
             {
                 double duration = Math.Max(0, Parsing.ParseDouble(split[5]) + Offset - startTime);
 
@@ -154,7 +153,7 @@ namespace osu.Game.Rulesets.Objects.Legacy
                 if (split.Length > 6)
                     readCustomSampleBanks(split[6], bankInfo);
             }
-            else if (type.HasFlagFast(LegacyHitObjectType.Hold))
+            else if (type.HasFlag(LegacyHitObjectType.Hold))
             {
                 // Note: Hold is generated by BMS converts
 
@@ -472,7 +471,7 @@ namespace osu.Game.Rulesets.Objects.Legacy
                 soundTypes.Add(new LegacyHitSampleInfo(HitSampleInfo.HIT_NORMAL, bankInfo.BankForNormal, bankInfo.Volume, bankInfo.CustomSampleBank,
                     // if the sound type doesn't have the Normal flag set, attach it anyway as a layered sample.
                     // None also counts as a normal non-layered sample: https://osu.ppy.sh/help/wiki/osu!_File_Formats/Osu_(file_format)#hitsounds
-                    type != LegacyHitSoundType.None && !type.HasFlagFast(LegacyHitSoundType.Normal)));
+                    type != LegacyHitSoundType.None && !type.HasFlag(LegacyHitSoundType.Normal)));
             }
             else
             {
@@ -480,13 +479,13 @@ namespace osu.Game.Rulesets.Objects.Legacy
                 soundTypes.Add(new FileHitSampleInfo(bankInfo.Filename, bankInfo.Volume));
             }
 
-            if (type.HasFlagFast(LegacyHitSoundType.Finish))
+            if (type.HasFlag(LegacyHitSoundType.Finish))
                 soundTypes.Add(new LegacyHitSampleInfo(HitSampleInfo.HIT_FINISH, bankInfo.BankForAdditions, bankInfo.Volume, bankInfo.CustomSampleBank));
 
-            if (type.HasFlagFast(LegacyHitSoundType.Whistle))
+            if (type.HasFlag(LegacyHitSoundType.Whistle))
                 soundTypes.Add(new LegacyHitSampleInfo(HitSampleInfo.HIT_WHISTLE, bankInfo.BankForAdditions, bankInfo.Volume, bankInfo.CustomSampleBank));
 
-            if (type.HasFlagFast(LegacyHitSoundType.Clap))
+            if (type.HasFlag(LegacyHitSoundType.Clap))
                 soundTypes.Add(new LegacyHitSampleInfo(HitSampleInfo.HIT_CLAP, bankInfo.BankForAdditions, bankInfo.Volume, bankInfo.CustomSampleBank));
 
             return soundTypes;
diff --git a/osu.Game/Screens/Edit/Compose/Components/SelectionBox.cs b/osu.Game/Screens/Edit/Compose/Components/SelectionBox.cs
index fec3224fad..0cc8a8273f 100644
--- a/osu.Game/Screens/Edit/Compose/Components/SelectionBox.cs
+++ b/osu.Game/Screens/Edit/Compose/Components/SelectionBox.cs
@@ -4,7 +4,6 @@
 using System;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.EnumExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
@@ -298,13 +297,13 @@ namespace osu.Game.Screens.Edit.Compose.Components
         /// </remarks>
         public void PerformFlipFromScaleHandles(Axes axes)
         {
-            if (axes.HasFlagFast(Axes.X))
+            if (axes.HasFlag(Axes.X))
             {
                 dragHandles.FlipScaleHandles(Direction.Horizontal);
                 OnFlip?.Invoke(Direction.Horizontal, false);
             }
 
-            if (axes.HasFlagFast(Axes.Y))
+            if (axes.HasFlag(Axes.Y))
             {
                 dragHandles.FlipScaleHandles(Direction.Vertical);
                 OnFlip?.Invoke(Direction.Vertical, false);
diff --git a/osu.Game/Screens/Edit/Compose/Components/SelectionBoxDragHandleContainer.cs b/osu.Game/Screens/Edit/Compose/Components/SelectionBoxDragHandleContainer.cs
index e7f69b7b37..e5ac05ca6a 100644
--- a/osu.Game/Screens/Edit/Compose/Components/SelectionBoxDragHandleContainer.cs
+++ b/osu.Game/Screens/Edit/Compose/Components/SelectionBoxDragHandleContainer.cs
@@ -7,7 +7,6 @@ using System.Collections.Generic;
 using System.Linq;
 using JetBrains.Annotations;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.EnumExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 
@@ -74,9 +73,9 @@ namespace osu.Game.Screens.Edit.Compose.Components
         {
             foreach (var handle in scaleHandles)
             {
-                if (direction == Direction.Horizontal && !handle.Anchor.HasFlagFast(Anchor.x1))
+                if (direction == Direction.Horizontal && !handle.Anchor.HasFlag(Anchor.x1))
                     handle.Anchor ^= Anchor.x0 | Anchor.x2;
-                if (direction == Direction.Vertical && !handle.Anchor.HasFlagFast(Anchor.y1))
+                if (direction == Direction.Vertical && !handle.Anchor.HasFlag(Anchor.y1))
                     handle.Anchor ^= Anchor.y0 | Anchor.y2;
             }
         }
diff --git a/osu.Game/Screens/Edit/Compose/Components/SelectionBoxRotationHandle.cs b/osu.Game/Screens/Edit/Compose/Components/SelectionBoxRotationHandle.cs
index b9383f1bad..c62e0e0d41 100644
--- a/osu.Game/Screens/Edit/Compose/Components/SelectionBoxRotationHandle.cs
+++ b/osu.Game/Screens/Edit/Compose/Components/SelectionBoxRotationHandle.cs
@@ -4,7 +4,6 @@
 using System;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.EnumExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Cursor;
 using osu.Framework.Graphics.Sprites;
@@ -46,8 +45,8 @@ namespace osu.Game.Screens.Edit.Compose.Components
                 Icon = FontAwesome.Solid.Redo,
                 Scale = new Vector2
                 {
-                    X = Anchor.HasFlagFast(Anchor.x0) ? 1f : -1f,
-                    Y = Anchor.HasFlagFast(Anchor.y0) ? 1f : -1f
+                    X = Anchor.HasFlag(Anchor.x0) ? 1f : -1f,
+                    Y = Anchor.HasFlag(Anchor.y0) ? 1f : -1f
                 }
             });
         }
diff --git a/osu.Game/Screens/Edit/Compose/Components/SelectionBoxScaleHandle.cs b/osu.Game/Screens/Edit/Compose/Components/SelectionBoxScaleHandle.cs
index 3f4f2c2854..7b0943c1d0 100644
--- a/osu.Game/Screens/Edit/Compose/Components/SelectionBoxScaleHandle.cs
+++ b/osu.Game/Screens/Edit/Compose/Components/SelectionBoxScaleHandle.cs
@@ -3,7 +3,6 @@
 
 using osu.Framework.Allocation;
 using osu.Framework.Extensions;
-using osu.Framework.Extensions.EnumExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Input.Events;
 using osu.Framework.Utils;
@@ -128,6 +127,6 @@ namespace osu.Game.Screens.Edit.Compose.Components
             }
         }
 
-        private bool isCornerAnchor(Anchor anchor) => !anchor.HasFlagFast(Anchor.x1) && !anchor.HasFlagFast(Anchor.y1);
+        private bool isCornerAnchor(Anchor anchor) => !anchor.HasFlag(Anchor.x1) && !anchor.HasFlag(Anchor.y1);
     }
 }
diff --git a/osu.Game/Screens/Play/HUDOverlay.cs b/osu.Game/Screens/Play/HUDOverlay.cs
index 0c0941573c..ef3bb7c04a 100644
--- a/osu.Game/Screens/Play/HUDOverlay.cs
+++ b/osu.Game/Screens/Play/HUDOverlay.cs
@@ -8,7 +8,6 @@ using System.Collections.Generic;
 using JetBrains.Annotations;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.EnumExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Primitives;
@@ -295,7 +294,7 @@ namespace osu.Game.Screens.Play
                 Drawable drawable = (Drawable)element;
 
                 // for now align some top components with the bottom-edge of the lowest top-anchored hud element.
-                if (drawable.Anchor.HasFlagFast(Anchor.y0))
+                if (drawable.Anchor.HasFlag(Anchor.y0))
                 {
                     // health bars are excluded for the sake of hacky legacy skins which extend the health bar to take up the full screen area.
                     if (element is LegacyHealthDisplay)
@@ -305,20 +304,20 @@ namespace osu.Game.Screens.Play
 
                     bool isRelativeX = drawable.RelativeSizeAxes == Axes.X;
 
-                    if (drawable.Anchor.HasFlagFast(Anchor.TopRight) || isRelativeX)
+                    if (drawable.Anchor.HasFlag(Anchor.TopRight) || isRelativeX)
                     {
                         if (lowestTopScreenSpaceRight == null || bottom > lowestTopScreenSpaceRight.Value)
                             lowestTopScreenSpaceRight = bottom;
                     }
 
-                    if (drawable.Anchor.HasFlagFast(Anchor.TopLeft) || isRelativeX)
+                    if (drawable.Anchor.HasFlag(Anchor.TopLeft) || isRelativeX)
                     {
                         if (lowestTopScreenSpaceLeft == null || bottom > lowestTopScreenSpaceLeft.Value)
                             lowestTopScreenSpaceLeft = bottom;
                     }
                 }
                 // and align bottom-right components with the top-edge of the highest bottom-anchored hud element.
-                else if (drawable.Anchor.HasFlagFast(Anchor.BottomRight) || (drawable.Anchor.HasFlagFast(Anchor.y2) && drawable.RelativeSizeAxes == Axes.X))
+                else if (drawable.Anchor.HasFlag(Anchor.BottomRight) || (drawable.Anchor.HasFlag(Anchor.y2) && drawable.RelativeSizeAxes == Axes.X))
                 {
                     var topLeft = element.ScreenSpaceDrawQuad.TopLeft;
                     if (highestBottomScreenSpace == null || topLeft.Y < highestBottomScreenSpace.Value.Y)
diff --git a/osu.Game/Screens/Ranking/Statistics/HitEventTimingDistributionGraph.cs b/osu.Game/Screens/Ranking/Statistics/HitEventTimingDistributionGraph.cs
index 47807a8346..207e19a716 100644
--- a/osu.Game/Screens/Ranking/Statistics/HitEventTimingDistributionGraph.cs
+++ b/osu.Game/Screens/Ranking/Statistics/HitEventTimingDistributionGraph.cs
@@ -5,7 +5,6 @@ using System;
 using System.Collections.Generic;
 using System.Linq;
 using osu.Framework.Allocation;
-using osu.Framework.Extensions.EnumExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
@@ -282,7 +281,7 @@ namespace osu.Game.Screens.Ranking.Statistics
 
             protected override bool OnInvalidate(Invalidation invalidation, InvalidationSource source)
             {
-                if (invalidation.HasFlagFast(Invalidation.DrawSize))
+                if (invalidation.HasFlag(Invalidation.DrawSize))
                 {
                     if (lastDrawHeight != null && lastDrawHeight != DrawHeight)
                         Scheduler.AddOnce(updateMetrics, false);
diff --git a/osu.Game/Screens/Select/BeatmapCarousel.cs b/osu.Game/Screens/Select/BeatmapCarousel.cs
index 4f2325adbf..56e7c24985 100644
--- a/osu.Game/Screens/Select/BeatmapCarousel.cs
+++ b/osu.Game/Screens/Select/BeatmapCarousel.cs
@@ -10,7 +10,6 @@ using osu.Framework.Audio;
 using osu.Framework.Audio.Sample;
 using osu.Framework.Bindables;
 using osu.Framework.Caching;
-using osu.Framework.Extensions.EnumExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Pooling;
@@ -828,7 +827,7 @@ namespace osu.Game.Screens.Select
         protected override bool OnInvalidate(Invalidation invalidation, InvalidationSource source)
         {
             // handles the vertical size of the carousel changing (ie. on window resize when aspect ratio has changed).
-            if (invalidation.HasFlagFast(Invalidation.DrawSize))
+            if (invalidation.HasFlag(Invalidation.DrawSize))
                 itemsCache.Invalidate();
 
             return base.OnInvalidate(invalidation, source);
diff --git a/osu.Game/Skinning/SerialisableDrawableExtensions.cs b/osu.Game/Skinning/SerialisableDrawableExtensions.cs
index 97c4cc8f73..a0488492ae 100644
--- a/osu.Game/Skinning/SerialisableDrawableExtensions.cs
+++ b/osu.Game/Skinning/SerialisableDrawableExtensions.cs
@@ -2,7 +2,6 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.EnumExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Configuration;
@@ -19,9 +18,9 @@ namespace osu.Game.Skinning
             // todo: can probably make this better via deserialisation directly using a common interface.
             component.Position = drawableInfo.Position;
             component.Rotation = drawableInfo.Rotation;
-            if (drawableInfo.Width is float width && width != 0 && (component as CompositeDrawable)?.AutoSizeAxes.HasFlagFast(Axes.X) != true)
+            if (drawableInfo.Width is float width && width != 0 && (component as CompositeDrawable)?.AutoSizeAxes.HasFlag(Axes.X) != true)
                 component.Width = width;
-            if (drawableInfo.Height is float height && height != 0 && (component as CompositeDrawable)?.AutoSizeAxes.HasFlagFast(Axes.Y) != true)
+            if (drawableInfo.Height is float height && height != 0 && (component as CompositeDrawable)?.AutoSizeAxes.HasFlag(Axes.Y) != true)
                 component.Height = height;
             component.Scale = drawableInfo.Scale;
             component.Anchor = drawableInfo.Anchor;
diff --git a/osu.Game/Skinning/SerialisedDrawableInfo.cs b/osu.Game/Skinning/SerialisedDrawableInfo.cs
index ac1aa80d29..b4be5745d1 100644
--- a/osu.Game/Skinning/SerialisedDrawableInfo.cs
+++ b/osu.Game/Skinning/SerialisedDrawableInfo.cs
@@ -6,7 +6,6 @@ using System.Collections.Generic;
 using System.Linq;
 using Newtonsoft.Json;
 using osu.Framework.Bindables;
-using osu.Framework.Extensions.EnumExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Logging;
@@ -68,10 +67,10 @@ namespace osu.Game.Skinning
             Rotation = component.Rotation;
             Scale = component.Scale;
 
-            if ((component as CompositeDrawable)?.AutoSizeAxes.HasFlagFast(Axes.X) != true)
+            if ((component as CompositeDrawable)?.AutoSizeAxes.HasFlag(Axes.X) != true)
                 Width = component.Width;
 
-            if ((component as CompositeDrawable)?.AutoSizeAxes.HasFlagFast(Axes.Y) != true)
+            if ((component as CompositeDrawable)?.AutoSizeAxes.HasFlag(Axes.Y) != true)
                 Height = component.Height;
 
             Anchor = component.Anchor;
diff --git a/osu.Game/Storyboards/StoryboardExtensions.cs b/osu.Game/Storyboards/StoryboardExtensions.cs
index 04c7196315..110af73cca 100644
--- a/osu.Game/Storyboards/StoryboardExtensions.cs
+++ b/osu.Game/Storyboards/StoryboardExtensions.cs
@@ -1,7 +1,6 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-using osu.Framework.Extensions.EnumExtensions;
 using osu.Framework.Graphics;
 using osuTK;
 
@@ -22,18 +21,18 @@ namespace osu.Game.Storyboards
             // Either flip horizontally or negative X scale, but not both.
             if (flipH ^ (vectorScale.X < 0))
             {
-                if (origin.HasFlagFast(Anchor.x0))
+                if (origin.HasFlag(Anchor.x0))
                     origin = Anchor.x2 | (origin & (Anchor.y0 | Anchor.y1 | Anchor.y2));
-                else if (origin.HasFlagFast(Anchor.x2))
+                else if (origin.HasFlag(Anchor.x2))
                     origin = Anchor.x0 | (origin & (Anchor.y0 | Anchor.y1 | Anchor.y2));
             }
 
             // Either flip vertically or negative Y scale, but not both.
             if (flipV ^ (vectorScale.Y < 0))
             {
-                if (origin.HasFlagFast(Anchor.y0))
+                if (origin.HasFlag(Anchor.y0))
                     origin = Anchor.y2 | (origin & (Anchor.x0 | Anchor.x1 | Anchor.x2));
-                else if (origin.HasFlagFast(Anchor.y2))
+                else if (origin.HasFlag(Anchor.y2))
                     origin = Anchor.y0 | (origin & (Anchor.x0 | Anchor.x1 | Anchor.x2));
             }