Stuff like that is the reason I
hate love computers. Wonder if the locale change method you used caused it. My steamdeck isn't but my PC and shitbox laptop are set to Japanese locale because of another game I play(ed). I don't have a problem running futaring on anything. If you want the directions to how I did it look for Ssethtzeentach's video on
Kamidori Alchemy Meister. No futa involved but it's a pretty good game aswell if you're interested, futaring first imo lol. The struggle to play will hopefully be worth it lmao.