pretty sure anything other than gmod (and strata games) is still 32bit, even with the vulkan renderer support

Only on Valve’s official servers. Everywhere else is safe from those.

I’m pretty sure WinBTRFS’s readme has a section about properly setting up the user and group permission stuff. Essentially just providing the Windows UUID to Linux POSIX equivilant, which generally ends up fixing all the permission related problems. The only real caveat is it not working with SuperFetch, so files aren’t cached in memory and have to be loaded from disk with every read.