Your system information

• Steam client version (build number or date):
  • Steam Version: 1700160213
  • Steam Client Build Date: Thu, Nov 16 7:23 PM UTC -08:00
  • Steam Web Build Date: Thu, Nov 16 7:06 PM UTC -08:00
  • Steam API Version: SteamClient021
• Distribution (e.g. Ubuntu): EndeavourOS (Arch Linux derivative)
• Opted into Steam client beta?: No
• Have you checked for system updates?: Yes
• Steam Logs: https://drive.google.com/file/d/1xYfOsAK6wrUiSY0pzeXDDtr1ukfmuijg/view?usp=sharing
• GPU: Laptop with mux - AMD iGPU, AMD dGPU
  • Running in Hybrid mode
  • VA-API and VDPAU drivers installed: libva-mesa-driver, mesa-vdpau

Please describe your issue in as much detail as possible:

When using Steam Link for playing games remotely, the games play fine, but the Big Picture steam menu is unusable, probably shows 1 frame every 15 seconds.
Steam log shows some error using VAAPI:

ffmpeg verbose: libva: Trying to open /usr/lib32/dri/radeonsi_drv_video.so
ffmpeg verbose: libva: va_openDriver() returns -1
ffmpeg error: Failed to initialise VAAPI connection: -1 (unknown libva error).
CGameStreamVideoStageVAAPI: Failed to create device context: Input/output error

Steps for reproducing this issue:

1. Run steam-runtime -pipewire
2. Accept screen share popup
3. Start Steam Link session