USB 2.0 at 200 MBps sounds like a serious limitation. 1080P is of course more than sufficient for the average video conference, but it seems kind of wasteful to use a 48MP sensor and then discarding most of the information, followed by lossy compression.
200 Mbps should be more than enough to stream good quality video. YouTube suggests 40 Mbps for 4k@60Hz (compressed) https://support.google.com/youtube/answer/2853702?hl=en#