[BUG] Steam Link - NVIDIA 4080 Super artifacts above 1280 for foveated rendering resolution at 120hz

[RealSupremium]

Bug Description
The foveated area jitters when the resolution is above 1280. What's weird is that I can select something other than 120hz without restarting to switch refresh rates and see the jitter goes away.

To Reproduce
Steps to reproduce the behavior:

1. Launch Steam Link with 120hz refresh rate
2. Change foveated rendering resolution above 1280
3. Play around with the refresh rate buttons to notice the issue goes away, but the actual refresh rate (or resolution?) has not changed.

Expected behavior
No jittering or artifacts of the foveated low resolution part

System Information:

• Steam client version (build number or date): Steam Version: 1773426488
• SteamVR version: 2.16.1
• Distribution (e.g. Ubuntu): EndeavourOS (Arch)
• Steam runtime diagnostics: report.txt
• Steam and SteamVR logs: logs.zip

Screenshots
No matter what, I can't seem to record or screenshot it.

Additional context
I am using the Vulkan beta drivers. Also using a Quest 3.

[Packetdancer]

can't seem to record or screenshot it

In case you haven't already tried this... if you launch SteamVR from the command-line with VRLINK_DUMP_BISTREAM=1, does the issue show up in the resulting /tmp/vrlink_debug.h265 file? That'll at least help figure out if it's a problem in the encoding itself or not.