Video Shaking

Hi everyone,

For the past month, whenever I join a meeting, one participant's screen shakes.  I have completed updates, restarted my computer, logged in and out of my account, and yet one person will have a shakey video screen.  I noticed it is usually in the upper left corner of the screen (when it is more than one person). It is completely distracting and a bit visually overwhelming.  Any suggestions on how to fix this?