koobas.hobune.stream
AsyncOperation for SceneManager.LoadSceneAsync doesn't adhere to Application.backgroundLoadingPriority
I'm loading levels with:
AsyncOperation async = SceneManager.LoadSceneAsync()
I've set background loading priority via:
Application.backgroundLoadingPriority = ThreadPriority.Low;
According to https://docs.unity3d.com/ScriptReference/Application-backgroundLoadingPriority.html, setting ThreadPriority.Low - 2ms "This is a maximum time all asynchronous operations can spend within a single frame on a main thread."
However, I'm seeing huge performance hits when scenes are loading.. here we see 123ms spent loading: 
Any clues why this AsyncOperation is not following backgroundLoadingPriority? Or how to REALLY load the scene asynchronously without the performance hit?
Best Answer
AsyncOpertion.priority does not take the ThreadPriority enum
The load/unload Scene thread is always high priority, all you can do is change which SceneLoad-job may be executed first. The default value is 0 and any higher value will equal a higher priority.
