Hello @wanlizhu, it looks like the ValveSoftware fork of dxvk has this commit https://github.com/ValveSoftware/dxvk/commit/cafeea30375b274470419e7f82b8c29d4ee2950d. It's not particularly interesting to try to maintain an experimental dev build from over a year ago.
proton experimentalx1 2023-02
I tried to compile proton experimental-6.3-20220119 with the following commands:
but there is a fatal error while updating submodule dxvk:
It looks like proton is referencing to a dxvk version that doesn't exist in server.