Valve just released Proton 8.0-5 so you should get an auto update on your Steam Deck very soon, if not, try a reboot, but this should become the default Proton used by the Steam Deck once it updates.
This Proton update has a tonne of fixes but here are the main highlights:
Games Now playable
Grotesque Tactics: Evil Heroes
Welcome to Princeland
Red Tie Runner
Simon the Sorcerer: 25th Anniversary Edition
Assassin's Creed Mirage
Steam Deck OLED HDR compatibility
Resident Evil 2
Resident Evil 3
Resident Evil 7 Biohazard
Resident Evil Village
Mass Effect Legendary Edition
Alan Wake 2
Devil May Cry 5.
Notable Bug Fixes
Baldur's Gate 3 not starting after a recent game update.
Cyberpunk 2077 crashing with DualSense plugged in after a recent game update.
Forza Horizon 5 not working after a recent game update.
Starfield not saving photos in photo mode.
Swapped Start / Select buttons on controllers in Starfield and other games using Windows.Gaming.Input.
Halo Infinite crashes on SteamOS 3.5.
Witcher 3 and other games crashing when monitor is turned off and on again.
Resident Evil 2 crashing for some users during gameplay.
Crysis 2 Remastered showing only black screen for some users.
Crysis 3 being unable to launch properly due to failed authorization.
Crysis 3 Administrative Approval EA App Window being corrupted on Nvidia.
outdated driver warning in The Last of Us Part I.
Final Fantasy X/X-2 HD Remaster crashing during combat.
Final Fantasy X/X-2 HD Remaster crashing after Steam Cloud save updates sets resolution to Non-Deck-Native.
Periodic frame rate drops in Nickelodeon All-Star Brawl 2.
Mighty Switch Force! Collection crashing on some setups when no controllers are plugged in.
Fate of the Ages missing some audio cues.
Elite Dangerous crashing when opening external links.
Issues with connecting to online services in Tony Hawk's Pro Skater 1 + 2.
Fonts not rendering in the main menu of Aveyond 4: Shadow of the Mist.
Aveyond 4: Shadow of the Mist crashing when clicking on Strategy Guide button.
The Binding of Isaac: Rebirth crashes that mostly happened when using bombs later in a run.
Load / save dialogs not working in Idle Spiral on Steam Deck.
Font rendering in save / load dialog in Idle Spiral.
Multiplayer in NASCAR Heat 5.
Multiplayer in DiRT Rally.
Video playback in Out of Ore.
For a full list of the fixes you can see the full release notes here