Hello @shoober420, can you check if running the game with PROTON_USE_WINED3D=1 %command% in the game's launch options has an effect?
Using the "PROTON_USE_WINED3D=1" launch option does fix the issue.
PROTON_USE_WINED3D=1"x1 2020-02PROTON_USE_WINED3D=1x1 2020-02PROTON_USE_WINED3D=1 %command%x1 2020-02
Compatibility Report
System Information
LOG:
steam-319140.log
Symptoms
Game renders only the top left portion, everything else is a black screen.