You can try adding the overrides in wine cfg instead (you can use proton tricks to make this easier if you’re running through steam). I’m not familiar with this mod though so I’m afraid I can’t help you further. Hopefully someone else who knows the mod will be able to help.

What do your launch options look like?

Try “WINEDLLOVERRIDES”

You need to add DLL overrides. You can do this in the wine prefix settings or via a launch command

Try disabling the steam overlay