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Hybrid GPU systems: DX12 capability probing uses first Vulkan device rather than discrete GPU

NVIDIA driversPossibly involves an issue with the NVIDIA proprietary driverPossibly involves an issue with the NVIDIA proprietary driver

Status: Open.

#9329 In ValveSoftware/Proton;

· EAbuVrwV opened on Dec 21, 2025

Salt and Sanctuary (283640)

.NETUses the .NET frameworkUses the .NET framework

Game compatibility - UnofficialGames not expected to work without issuesGames not expected to work without issues

Status: Open.

#9328 In ValveSoftware/Proton;

· ranplayer opened on Dec 21, 2025

Limbus Company (1973530)

Game compatibility - UnofficialGames not expected to work without issuesGames not expected to work without issues

Status: Open.

#9327 In ValveSoftware/Proton;

· sirspiderider opened on Dec 21, 2025

Proton 10.0-4 Release Candidate testing

Status: Open.

#9323 In ValveSoftware/Proton;

· alasky17 opened on Dec 18, 2025

Space Engineers 2 - Mod SDK (3578990)

Game compatibility - UnofficialGames not expected to work without issuesGames not expected to work without issues

Status: Open.

#9322 In ValveSoftware/Proton;

· CaptainPicarl opened on Dec 18, 2025

CreateSymbolicLinkA/W support

Feature RequestNew feature or requestNew feature or request

Status: Open.

#9318 In ValveSoftware/Proton;

· ognkrmms opened on Dec 17, 2025

Tomb Raider (203160)

Game compatibility - UnofficialGames not expected to work without issuesGames not expected to work without issues

Status: Open.

#9317 In ValveSoftware/Proton;

· witchlliee opened on Dec 16, 2025

Proton-enabled games crash using a 3090 on kubuntu 25.10

Status: Open.

#9314 In ValveSoftware/Proton;

· SgtxRootbeer opened on Dec 16, 2025

Norland (1857090)

Game compatibility - UnofficialGames not expected to work without issuesGames not expected to work without issues

Status: Open.

#9311 In ValveSoftware/Proton;

· LunaVoadora opened on Dec 14, 2025

GunZ: The Duel Playtest (3470360)

Game compatibility - UnofficialGames not expected to work without issuesGames not expected to work without issues

Status: Open.

#9310 In ValveSoftware/Proton;

· dCo3lh0 opened on Dec 13, 2025

NINJA GAIDEN Σ2 [NINJA GAIDEN: Master Collection] (1580790)

Game compatibility - UnofficialGames not expected to work without issuesGames not expected to work without issues

XAudio2Uses the XAudio2 subsystemUses the XAudio2 subsystem

Status: Open.

#9308 In ValveSoftware/Proton;

· BungoJiggins opened on Dec 13, 2025

Dragon Quest X

Game compatibility - UnofficialGames not expected to work without issuesGames not expected to work without issues

Status: Open.

#9307 In ValveSoftware/Proton;

· Amarlian opened on Dec 13, 2025