Wow... thanks to the person that posted the YouTube link, because I have Facebook blocked. Carmack was good to listen to, but the pan in when they turned it over to him /felt/ laggy, like you could see frame rate jitter, and the entire thing was out of sync. I'm generally pretty bullish on VR for entertainment and collaboration long-term, but this honestly felt like going back 20 years ago. I've had more realistic and smoother experiences in MMOs with voice chat.
The frame rate is fine in person, with these avatars. I think the delay/low FPS was on the 2d capture side. But sheesh, that should have been worked out.
Same experience with the Quests about 2D capture.
If you allow video capture to kick in, rendering resolution is lowered, the devices struggle to maintain proper frame rate, Asynchronous reprojection kicks into high-gear.
It's really a hardware limitation of those mobile SOCs, but pretty embarrassing none-the less.