Add GameplayDisableOverlays setting.

osu.Game/Configuration/OsuConfigManager.cs

@@ -100,6 +100,7 @@ protected override void InitialiseDefaults()
 
             Set(OsuSetting.IncreaseFirstObjectVisibility, true);
             Set(OsuSetting.GameplayDisableWinKey, true);
+            Set(OsuSetting.GameplayDisableOverlayActivation, true);
 
             // Update
             Set(OsuSetting.ReleaseStream, ReleaseStream.Lazer);
@@ -231,6 +232,7 @@ public enum OsuSetting
         UIHoldActivationDelay,
         HitLighting,
         MenuBackgroundSource,
-        GameplayDisableWinKey
+        GameplayDisableWinKey,
+        GameplayDisableOverlayActivation
     }
 }

osu.Game/Overlays/Settings/Sections/Gameplay/GeneralSettings.cs

@@ -77,6 +77,11 @@ private void load(OsuConfigManager config)
                 {
                     LabelText = "Score display mode",
                     Bindable = config.GetBindable<ScoringMode>(OsuSetting.ScoreDisplayMode)
+                },
+                new SettingsCheckbox
+                {
+                    LabelText = "Disable overlays during gameplay",
+                    Bindable = config.GetBindable<bool>(OsuSetting.GameplayDisableOverlayActivation)
                 }
             };