Changing Graphic Levels Causing Crash

Hi people, In the editor there are no errors or crashes occuring due to changing the graphic leves. Also it changes the quality perfectly fine.

But when I built my game and change the graphic levels, game crashes.

I tried 2 different codes:

public void SetQuality(int qualityIndex)

public void SetUltra()
	public void SetHigh()

Both of them are causing crash in built.

Note: When game crashes it’s not possible to open it again unless I delete “regedit” datas.

Crash no: “Unity 2020.1.16f1_f483ad6465d6”

I’ve discovered that my Cube Map is causing this crash. When I pick “Non”, crash disappeared.