Unreal is unable to save Scalability inside GameUserSettings.ini

Hello,
i’m trying to make a settings menu and now i need to save texturequality or other scalability parameters but when i do “get game user settings” → apply settings → save settings nothing is written inside GameUserSettings.ini.
I already checked inside Saved\Config\WindowsEditor\GameUserSettings.ini but just the basic stuff resolution, vsync … (btw all others parameters update when i save).
I also test in PIE, standalone and packaged but still nothing