I think doitsujin mentioned that your problems are from a bug in RADV for GCN 1.0, not DXVK. File a RADV bug report, not a DXVK one.
Yep , file a bug report.
I don't care about graphic glitches that is related to AMD RADV. The framerate when opening the game with DXVK is the same as opening the game without DXVK.
If the tricks listed in #298 do not help you, then the issue is likely in your graphics drivers and there is nothing we can do to help you. The RADV developers would need to help you.
I tried running the game on Windows. It is unplayable on Windows also, so I guess nothing to be done here.
Nothing extracted yet.
Software information
Mafia 3 - Low settings - 1366 × 768 resolution
System information
https://aur.archlinux.org/packages/mesa-transform-feedback-git
The game froze at the beginning and I had to open ~/.wine/drive_c/users/ahmed/Local Settings/Application Data/2K Games/Mafia III/Saves/videoconfig.cfg and change it to -6 0 1366 768 0 0 0 0 to change the game from fullscreen to window and that solved the problem.
But characters faces looks like that, and the games is not playable even in Low settings.
I can get over graphic glitches but I can't play the game with low framerate