GloriousEggroll has released a new version of their Proton fork with support for Microsoft Flight Simulator and The Outer Worlds.

Game Fixes:

• Wine esync+fsync rebased onto current wine 5.21 upstream git.
• The Outer Worlds should be fully playable
• Serious Sam 4 flicker has been fixed, Launching Vulkan on Nvidia also fixed. Vulkan should now work on NV and AMD.
• Microsoft Flight Simulator now working
• CoD: WWII + Multiplayer + Zombies should be fully playable
• CoD: Infinite Warfare + Zombies should be fully playable
• CoD: Modern Warfare Remastered should be fully playable
• Soul Calibur VI no longer freezes at the main menu, should be fully playable
• Borderlands 3 should be fully playable (including Markus intro)
• Seven: Days Long Gone Enhanced Edition should be fully playable
• Killer Instinct should be fully playable
• Long Loading on Warhammer 40k: Inquisitor - Martyr fixed
• Horizon Zero Dawn and Death Stranding OOM crashes should now be fixed
• Baldur's Gate Vulkan renderer should work without issues now. (On AMD you will need the latest mesa drivers)
• Skyrim Script Extender patch added - this should hopefully fix remaining issues with skse64 (untested but it does run)
• Should contain most of the fixes from Proton-5.13 from Valve, if something is missing let me know in discord.

Proton Fixes:

• fixed vcrun2019_ge not applying due to read only permissions within the prefix
• removed zenity dependency from protonfixes. since the new steam runtime does not have zenity we cannot use it. This means if you have things like skyrim script extender, grim internals, or anything that previously asked you whether or not you wanted to use them, instead it will just automatically launch them instead of asking you.

Known Issues:

-The build uses proton's new runtime, which runs within a container, therefore all of the current Proton 5.13 issues also apply here.

AGAIN, PLEASE BE AWARE THIS BUILD USES THE SAME RUNTIME AND CONTAINER AS PROTON 5.13, THEREFORE IT HAS THE SAME ISSUES LISTED HERE:

ValveSoftware#4289

-Red Dead Redemption 2 still does not work. Unfortunately the syscall patches in current proton do not work with upstream wine.
-Fullscreen hack is still currently disabled.

Known mfplat+quartz issues:

-Persona 4 is not working
-Catherine Classic is not working
-Black Ops III is not working
-Injustice 2 cutscenes broken currently
-Darksiders Warmastered Edition intro+cutscenes broken currently

Probably more stuff I forgot. There were a lot of updates and it took way longer than usual ;_;

Download Proton 5.21-GE-1 from GitHub
Installation Instructions