https://bugs.winehq.org/show_bug.cgi?id=40979
Dox IngeniousDox@gmail.com changed:
What |Removed |Added ---------------------------------------------------------------------------- CC| |IngeniousDox@gmail.com
--- Comment #11 from Dox IngeniousDox@gmail.com --- Someone I had _gfxErrorShaderCompileFailed on multiplayer maps. I asked him to install d3dcompiler_43 with "winetricks d3dcompiler_43". I found something about that in comments here (even though it was the wrong game).
That seems to have worked.
Perhaps it is worth a try here.