_Ghost_What are the unlit_nofog vpks for? Is it ok to use those with the regular unlits?
They're alternative vpk's that should improve fps with some added parameters, but I don't know if they're actually helping any and it's possible that those added parameters are already done by changing the shader and would just become slightly bigger files. I can't see any difference on my laptop, but I'm hoping either for someone with a different gpu to confirm it increases fps over regular _unlit or enough time will pass to just assume that there's no difference for anyone.
They change all the same files, so your game won't break or anything when using regular _unlits, but only one of them would be used so having both is pointless.