Нашёл причину утечки памяти

Assets/Code/Infrastructure/App/States/BootstrapState.cs

@@ -24,6 +24,11 @@ namespace Code.Infrastructure.App.States
             
             Context.UIService.TryLoadCreatePanel(UIPanelType.DebugSceneChooser);
             Context.AudioFactory.LoadAudioClips(AudioNames.UISounds);
+            
+            Context.AudioService.ChangeGroupVolume(
+                AudioGroupType.Music,
+                1f,
+                0.5f);
         }
  
         protected override void OnExitState()