diff --git a/osu.Game.Tests/Database/BackgroundDataStoreProcessorTests.cs b/osu.Game.Tests/Database/BackgroundDataStoreProcessorTests.cs
index 43ce7200d2..8b066f860f 100644
--- a/osu.Game.Tests/Database/BackgroundDataStoreProcessorTests.cs
+++ b/osu.Game.Tests/Database/BackgroundDataStoreProcessorTests.cs
@@ -1,6 +1,7 @@
 // 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 System;
 using System.Linq;
 using NUnit.Framework;
 using osu.Framework.Allocation;
@@ -182,9 +183,63 @@ namespace osu.Game.Tests.Database
             AddAssert("Score version not upgraded", () => Realm.Run(r => r.Find<ScoreInfo>(scoreInfo.ID)!.TotalScoreVersion), () => Is.EqualTo(30000002));
         }
 
+        [Test]
+        public void TestCustomRulesetScoreNotSubjectToUpgrades([Values] bool available)
+        {
+            RulesetInfo rulesetInfo = null!;
+            ScoreInfo scoreInfo = null!;
+            TestBackgroundDataStoreProcessor processor = null!;
+
+            AddStep("Add unavailable ruleset", () => Realm.Write(r => r.Add(rulesetInfo = new RulesetInfo
+            {
+                ShortName = Guid.NewGuid().ToString(),
+                Available = available
+            })));
+
+            AddStep("Add score for unavailable ruleset", () => Realm.Write(r => r.Add(scoreInfo = new ScoreInfo(
+                ruleset: rulesetInfo,
+                beatmap: r.All<BeatmapInfo>().First())
+            {
+                TotalScoreVersion = 30000001
+            })));
+
+            AddStep("Run background processor", () => Add(processor = new TestBackgroundDataStoreProcessor()));
+            AddUntilStep("Wait for completion", () => processor.Completed);
+
+            AddAssert("Score not marked as failed", () => Realm.Run(r => r.Find<ScoreInfo>(scoreInfo.ID)!.BackgroundReprocessingFailed), () => Is.False);
+            AddAssert("Score version not upgraded", () => Realm.Run(r => r.Find<ScoreInfo>(scoreInfo.ID)!.TotalScoreVersion), () => Is.EqualTo(30000001));
+        }
+
+        [Test]
+        public void TestNonLegacyScoreNotSubjectToUpgrades()
+        {
+            ScoreInfo scoreInfo = null!;
+            TestBackgroundDataStoreProcessor processor = null!;
+
+            AddStep("Add score which requires upgrade (and has beatmap)", () =>
+            {
+                Realm.Write(r =>
+                {
+                    r.Add(scoreInfo = new ScoreInfo(ruleset: r.All<RulesetInfo>().First(), beatmap: r.All<BeatmapInfo>().First())
+                    {
+                        TotalScoreVersion = 30000005,
+                        LegacyTotalScore = 123456,
+                    });
+                });
+            });
+
+            AddStep("Run background processor", () => Add(processor = new TestBackgroundDataStoreProcessor()));
+            AddUntilStep("Wait for completion", () => processor.Completed);
+
+            AddAssert("Score not marked as failed", () => Realm.Run(r => r.Find<ScoreInfo>(scoreInfo.ID)!.BackgroundReprocessingFailed), () => Is.False);
+            AddAssert("Score version not upgraded", () => Realm.Run(r => r.Find<ScoreInfo>(scoreInfo.ID)!.TotalScoreVersion), () => Is.EqualTo(30000005));
+        }
+
         public partial class TestBackgroundDataStoreProcessor : BackgroundDataStoreProcessor
         {
             protected override int TimeToSleepDuringGameplay => 10;
+
+            public bool Completed => ProcessingTask.IsCompleted;
         }
     }
 }
diff --git a/osu.Game/BackgroundDataStoreProcessor.cs b/osu.Game/BackgroundDataStoreProcessor.cs
index a748a7422a..fc7db13d41 100644
--- a/osu.Game/BackgroundDataStoreProcessor.cs
+++ b/osu.Game/BackgroundDataStoreProcessor.cs
@@ -13,6 +13,7 @@ using osu.Framework.Graphics;
 using osu.Framework.Logging;
 using osu.Game.Beatmaps;
 using osu.Game.Database;
+using osu.Game.Extensions;
 using osu.Game.Online.API;
 using osu.Game.Overlays;
 using osu.Game.Overlays.Notifications;
@@ -28,6 +29,8 @@ namespace osu.Game
     /// </summary>
     public partial class BackgroundDataStoreProcessor : Component
     {
+        protected Task ProcessingTask { get; private set; } = null!;
+
         [Resolved]
         private RulesetStore rulesetStore { get; set; } = null!;
 
@@ -61,7 +64,7 @@ namespace osu.Game
         {
             base.LoadComplete();
 
-            Task.Factory.StartNew(() =>
+            ProcessingTask = Task.Factory.StartNew(() =>
             {
                 Logger.Log("Beginning background data store processing..");
 
@@ -314,10 +317,17 @@ namespace osu.Game
         {
             Logger.Log("Querying for scores that need total score conversion...");
 
-            HashSet<Guid> scoreIds = realmAccess.Run(r => new HashSet<Guid>(r.All<ScoreInfo>()
-                                                                             .Where(s => !s.BackgroundReprocessingFailed && s.BeatmapInfo != null
-                                                                                                                         && s.TotalScoreVersion < LegacyScoreEncoder.LATEST_VERSION)
-                                                                             .AsEnumerable().Select(s => s.ID)));
+            HashSet<Guid> scoreIds = realmAccess.Run(r => new HashSet<Guid>(
+                r.All<ScoreInfo>()
+                 .Where(s => !s.BackgroundReprocessingFailed
+                             && s.BeatmapInfo != null
+                             && s.IsLegacyScore
+                             && s.TotalScoreVersion < LegacyScoreEncoder.LATEST_VERSION)
+                 .AsEnumerable()
+                 // must be done after materialisation, as realm doesn't want to support
+                 // nested property predicates
+                 .Where(s => s.Ruleset.IsLegacyRuleset())
+                 .Select(s => s.ID)));
 
             Logger.Log($"Found {scoreIds.Count} scores which require total score conversion.");
 
diff --git a/osu.Game/Rulesets/Mods/ModCinema.cs b/osu.Game/Rulesets/Mods/ModCinema.cs
index dbb37e0af6..7c88a8a588 100644
--- a/osu.Game/Rulesets/Mods/ModCinema.cs
+++ b/osu.Game/Rulesets/Mods/ModCinema.cs
@@ -30,7 +30,7 @@ namespace osu.Game.Rulesets.Mods
         public override IconUsage? Icon => OsuIcon.ModCinema;
         public override LocalisableString Description => "Watch the video without visual distractions.";
 
-        public override Type[] IncompatibleMods => base.IncompatibleMods.Concat(new[] { typeof(ModAutoplay), typeof(ModNoFail) }).ToArray();
+        public override Type[] IncompatibleMods => base.IncompatibleMods.Concat(new[] { typeof(ModAutoplay), typeof(ModNoFail), typeof(ModFailCondition) }).ToArray();
 
         public void ApplyToHUD(HUDOverlay overlay)
         {
diff --git a/osu.Game/Rulesets/Mods/ModFailCondition.cs b/osu.Game/Rulesets/Mods/ModFailCondition.cs
index 471c3bfe8d..0b229766c1 100644
--- a/osu.Game/Rulesets/Mods/ModFailCondition.cs
+++ b/osu.Game/Rulesets/Mods/ModFailCondition.cs
@@ -11,7 +11,7 @@ namespace osu.Game.Rulesets.Mods
 {
     public abstract class ModFailCondition : Mod, IApplicableToHealthProcessor, IApplicableFailOverride
     {
-        public override Type[] IncompatibleMods => new[] { typeof(ModNoFail) };
+        public override Type[] IncompatibleMods => new[] { typeof(ModNoFail), typeof(ModCinema) };
 
         [SettingSource("Restart on fail", "Automatically restarts when failed.")]
         public BindableBool Restart { get; } = new BindableBool();