Input Signal Out Of Range Change Settings To 1600x900 60hz Solución

This to me sounds like something you could post on protondb.
There are also different Proton builds (GloriousEggroll, others) to help.
I personally have not had major issues with DX11/12 games on Fedora, but again my install is different from yours. I do also have an Nvidia system(GTX970) and an AMD system (RX5700XT).