Could you try downloading the x32?
Viewing post in Baldi's Basics The Ultra Decompile comments
i found out the poblem, my pc is x64, but my GPU isn't compatible with DX12/11, but it works with 2d Unity games for some reason, well, can you make a 2d mode plase that like, you create a .bat file and initiates the game on an older dx version, and 2d mode is optitional, i know baldi is supposed to be a 3d game but i thinked a bit and 2d also fits well