@gamingonlinux After reading the issue tracker and experimenting with the new patch, I'm convinced all of this is Denuvo's fault.

With the new patch and default settings, it locks the model memory to low. But if you run with

PROTON_ENABLE_ NVAPI=1 SteamDeck=0 %command% -noDirectStorage

At least on Proton Hotfix, that opened the settings up. I tried switching to GE and am locked out by Denuvo for the day. 😡

Likely they disable denuvo on Deck and lock down quality to try to block piracy.