The problem tends to be more that the games I want to play aren't particularly playable under Proton to begin with; Assetto Corsa's listed as Silver under ProtonDB. That and I've got to use third-party drivers for my Logitech wheel to get working force feedback, which I can do, but it's a faff I'd rather do without.

That said, I'll be looking to build a new PC soon when the newly-announced AMD cards come out, so I'll probably look more into getting things working properly then.