It could be because you updated it, maybe?I'm experiencing something weird when playing Super Mario Maker
The WUX version runs fine, solid 60fps on everything
I extracted the game files in order to apply updates to it, and when I play the extracted version it's not a solid 60fps anymore, it's between 40-50 but never solid 60
(it also acts like a completely separate game as it didn't use the save I have on my WUX version)
So I tried the WUX version again just in case, I rebooted my PC and tried both
The WUX version stays at a solid 60fps but the extracted version doesn't (again it's 40-50 but never 60)
I wonder what's the cause of this...