As opposed to the default setting, this Proton version enables more stable and feature rich video playback. Featuring a number of fixes and most prominently playback of livestreamed content, typically real time streaming protocol found at live events and often utilized by the VRCDN.
As of the GE9-1-rtsp4 release, video content should be crash-free, please report any notable stability bugs to LVRA general chat or related issue tabs.
This tar file can be extracted to a ~/.steam/steam/compatibilitytools.d/ (create if it does not already exist) folder and steam restarted to set the game proton version to rtsp.
If you utilize pipewire as your audio server, VRChat has a tendancy to drop multiple seconds of audio over displayport connections under load for HMDs like the Valve Index [this workaround is required not to drop audio from time to time](https://gitlab.freedesktop.org/pipewire/pipewire/-/wikis/Troubleshooting#stuttering-audio-in-virtual-machine).
Similar tuning of pulseaudio can fix the issue if encountered there.
Please consider your opsec in relation to all VR API input including poses, all voice communication, unsandboxed code execution, the EAC anticheat system which occasionally probes system proc info and much more, and the game maintaining a memory buffered audio video recording of the window contents tied to the report system.
