Tested with Proton 10.0-beta2 and even GE-Proton10-17, same thing.
So I was able to test it with an old version of WiVRn (v25.6.1 with opencomposite) since it would crash with newer versions. It hang in the very same place. So it's not something due to the VR streaming software. It's something in proton.
Even now in Mesa 25.3.3 this issue is not resolved. It happens in the same place. Seems to be an issue with mesa drivers, not proton or the streaming software (WiVRn, ALVR, Steam Link).
ge-proton10-17x1 2025-09proton 10.0x1 2025-09PROTON_LOG=+vrclient,+openxr,+filex1 2025-09PROTON_LOG=1x1 2025-09
Compatibility Report
System Information
I confirm:
Symptoms
Reproduction
Different attempts
I haven't tested with different proton version (yet). But I have also tested using ALVR (with no sound that SteamVR beta current breaks ALVR's sound): https://youtu.be/Dyu5vdvStMc
I have moved the game from the HDD to my faster NVME after this, and tried again via Steam Link to ensure it's not a hard drive loading issue. It's this short gameplay here: https://youtu.be/BFNieJ2O1CM
proton logs
First one: for the attempt with
PROTON_LOG=1 %command%via ALVRSecond one: for the attempt with
PROTON_LOG=1 %command%via Steam Link and using the game on NVMEThird one: for the attempt with
PROTON_LOG=+vrclient,+openxr,+file %command%via Steam Link and using the game on NVME. This resulted in an enomous file and I had to zip it.steam-1501820-ziggy-alvr.log
steam-1501820-ziggy-mvme-steamlink.log
steam-1501820-ziggy-mvme-steamlink-xrclient.zip