After installing Teams I and half my team have been experiencing video playback (Chrome Safari, etc) to start the video and then sit there with a spinning wheel forever. NVRAMM reset doesn't work. Only reinstalling the MacOS works right up until I install and run Teams for the first time.
The other half of my team running the same OS does not have any issue.
We have had this issue with varying numbers of people since the spring.
Half of us now use teams on our phones instead of on our macs.