Substantial video lag
Using 2-party video chat over a rather congested network, the video lagged more and more until it was about a minute behind the audio (which was acceptably unlagged). Muting the video and then unmuting it removed the lag.
I should specify that I did not see the lag stop increasing at about 1 minute. That's just the longest it lagged before we reset.
The video also degraded more gracefully, spreading adjacent areas of color in the lower-frequency areas of the image (so that, say, a person in front of a red wall would look like a red wall with a high-pass Fourier filter video of a person overlaid on it), and cloning the bits of image directly above or below (creating smeared vertical columns of colour).
Unfortunately this video degradation also seemed to be rather progressive. Again, muting and unmuting the camera reset to the original quality.
This is on version FaiF.