As commented on your proton-ge-custom package, I just want to document it here as well that the mentioned AVX/AVX2 problems are probably fixed by now - I've tested this today with the testing packages of Mingw's GCC 12.1.0 and binutils and it works fine (tested with Company of Heroes 2). People with a compatible CPU can try my personal PKGBUILD with further optimizations: https://github.com/ms178/archpkgbuilds/blob/main/packages/dxvk-mingw/PKGBUILD
For this AUR package I'd propose to clean up the AVX/AVX2 related comments and deleting the "-mno-avx" entry in the cross_cflags+=" -mstackrealign" section (also for cxxflags, too).
Pinned Comments
loathingkernel commented on 2019-12-16 19:48 (UTC) (edited on 2019-12-16 19:49 (UTC) by loathingkernel)
This package contains three patches which are not applied by default. Feel free to read the documentation inside the PKGBUILD on what they do and how to enable them.
Don't report issues with these patches enabled to the dxvk creator before posting here. If you do, please be aware that they will probably close your issue nevertheless.