Terrain goes black when changing graphic quality in builded game

hello everyone

i’m having a strange issue that when i change graphic quality on my game’s main menu after building game.

Indeed, all work perfectly in the Editor but when I try to change the graphic quality in the .exe game, the terrain goes black and the grass is sometimes getting a strange color.

Here are two screenshots to show you my problem :

before changing graphic quality:

after changing graphic quality

Remember that this problem occure only in exe game but not in editor.

Thanks you for the support (and sorry for my potential bad english) !

Yup, this happens to me all the time when working with a big scene… All I do is save my scene and project. Then open another scene, wait a few seconds (around 10) and then go back to your scene. Hope it helps.