25 July video conference: problems with Chrome on Linux Ubuntu

I organized a video conference on July 25 from 11AM - 3PM (New York time).

A user reported the following trouble:

OS: Ubuntu 16.04.6 LTS*
Browser: Chrome Version 84.0.4147.89 (Official Build) (64-bit)*

Here’s what I experienced:

At first everything in the Jitsi Video Conference worked fine. Then after about 1/2 hour the audio and video quality began to become choppy. Eventually Jitsi froze. None of the controls would respond. To recover I would have to close the browser window, open a new browser window, and re-enter by clicking on the meetup link for the Math Counts Video conference. Often when I tried to re-enter the Math Counts conference I would be taken to an empty conference displaying a message saying there were no other users presently in the conference. I would then have to exit Jitsi, close the browser window and try again. Eventually I would get back to the actual Math Counts conference.

I experienced this issue over four times during our Math Counts Meetup. (I stopped counting after four times.)