Valve and CodeWeavers are working towards a fresh release of Proton with plenty of goodies including like more games working, and plenty of bug fixes too. If you don't know what Steam Play Proton is be sure to check our dedicated page.
Proton 6.3-6 has a first Release Candidate build available for testing, which you can try out directly in the Steam Client on Linux. However, it comes with a major change for save files that needs testing and so any game you want to try with it - ensure you've looked up how to backup your save. It's supposed to fix the Steam cloud sync feature for a number of games and should auto-migrate but it's a test build - you've been warned. This save adjustment should help Guilty Gear -Strive-, Death Stranding, Katamari Damacy Reroll and Scarlet Nexus.
These games should be playable without workarounds with this version:
- Forza Horizon 4
- Tokyo Xanadu eX+
- Sonic Adventure 2
- Rez Infinite
- Elite Dangerous
- Blood of Steel
- Homeworld Remastered Collection
- Star Wars Knights of the Old Republic
- eFootball PES 2021
- Guardians VR
- 3D Aim Trainer
More improvements came too like better cursor capturing behaviour for fullscreen windows, input handling was improved when focus is lost in a few games like Project Cars 3, Warhammer: Chaosbane, and Far Cry Primal. This release also upgrades various parts of the tech stack like wine-mono to 6.3, DXVK to 1.9.1, VKD3D-Proton to 2.4 and FAudio to 20.08.
You will also find that this release also pulls in support for NVAPI GPU support library and DLSS, although disabled by default you can enable it with
Other fixes and improvements include:
Fix Microsoft Flight Simulator hang while loading.
Fix Unreal Engine 4 update installation, which impacted Everspace 2, The Turing Test, and KARDS.
Fix text input and clipboard pasting in Origin overlay and launcher.
Fix some music not playing in Planet Coaster.
Improve non-English experience in Cyberpunk 2077 and Rockstar Games launchers.
Improve launcher behavior in Swords of Legends Online.
Fix Mafia III: Definitive Edition performance when FPS limiter is enabled.
Fix audio playback issues in Fallout: New Vegas, Oblivion, Borderlands 3, and Deep Rock Galactic.
Improve video playback in Deep Rock Galactic, The Medium, Nier: Replicant, and Contra: Rogue Corps.
How to test it:
- Search for Proton 6.3 in Steam
- Right click and go to Properties
- Go to the Betas tab
- Select proton-6.3-6-rc from the dropdown box
Note: it will still say it's an older build despite being a newer one.