Valve has released the new stable version 7.0-6 of Proton.

7.0-6:

Now playable:
Gotham Knights
UNCHARTED: Legacy of Thieves Collection
Heroes of the Dark
Super Arcade Racing
Crazy Machines 3
King under the Mountain
NinNinDays2
雀姬 (Mahjong ladies)
Fix Ubisoft Connect launcher failure caused by launcher update.
Fix Septerra Core hanging on redistributables installation.
Fix Persona 5 Royal crashing when creating game save data.
Fix Vampire Survivors intermittent error message.
Fix Super House of Dead Ninjas, Enemy Mind, and Out There Somewhere frame hitching every few seconds.
Fix Zeepkist freezing when using controller.
Fix Overcooked! All You Can Eat being unable to add a second controller-using player.
Fix Quake III: Arena and Quake III: Team Arena displaying weird texture over the menu.
Fix the new EA launcher displaying a blank window.
Fix Marvel Snap not being able connect to online services.
Fix Microsoft Flight Simulator crashing during longer flights.
Fix Microsoft Flight Simulator not displaying live traffic.
Fix Microsoft Flight Simulator not starting after a recent game update.
Fix Microsoft Flight Simulator crashing when starting next to big cities.
Fix Sackboy: A Big Adventure failing to start the first time it's launched.
Fix Spyro Reignited Trilogy playing intro video in a wrong language.
Fix Jurassic World Evolution 2 bad performance with recent Proton versions.
Fix multiple monitor support in Project Cars 2 and Project Cars 3.
Fix Korean not being rendered correctly in Romance of the Three Kingdoms XIII launcher.
Fix multiple languages not rendering correctly in Sins of a Solar Empire: Rebellion.
Fix Lost Lands: Dark Overlord, Lost Lands: Dark Lord, Lost Lands: Redemption, and Haunted Hotel: Silent Waters Collector's Edition crashing when trying to set a wallpaper.
Fix video playback regression with Chronos: Before the Ashes.
Improve video playback with OUTRIDERS and ToGather: Island.
Update wine-mono to 7.4.0.
Update dxvk-nvapi to v0.6.