I recently got my Quest 2 and it's been excellent as a standalone headset, but utterly unusable in conjunction with my PC. In both virtual desktop and using the link cable, I'm getting excessive latency, low framerates, and ugly compression artifacts, and nothing I've tried seems to have much effect.
I have a TP Link AX1500 wifi-6 modem set up as a dedicated wireless access point for the headset, and virtual desktop is showing a strong connection with 1200mbps bandwidth and latency around 23ms when streaming the desktop. My PC is running an RX5700XT, a Ryzen 5 2600, and 16gb of RAM.
As soon as I load into a game or the SteamVr home (yes, using VD's interface) my latency gets nuked to about 150ms and my framerate drops to the mid 20's to low 30's. Most of this isn't coming from network or decoding, about 80ms is from encoding and 40ms is from the game. This is with virtual desktop set to the lowest possible settings, 32mbps and low quality, and I've tried sliced encoding and all the other VD settings. Nothing helps. Lowering in-game settings doesn't have much effect. If I look on my PC, CPU and GPU usage levels are normal (50-80%, not low but not maxed either) and SteamVr's performance graph show middling GPU activity with good frame times and only minor spikes when loading a level or something similar. The only thing that has any positive effect is if I cut my render resolution all the way down to 20% in SteamVr settings. Performance with the link cable is also bad in all the same ways, and the problem persists on both connections when using Oculus desktop apps, so the issue may not be SteamVr either. I've heard that AMD's recent drivers have issues with the Quest 2, so I tried rolling back my drivers a couple times. So far, 20.11.2, 20.4.1, and 19.12.3 have all had the same issues. At this point, I'm at a total loss. I've seen people with similar or worse setups getting vastly better performance, so something is clearly broken. If anyone has worked through similar issues, or has any ideas for me to try, let me know. In the meantime, it's looking like the Quest 2 might not be replacing my old Odyssey+ any time soon...