Comment by Orphis

As someone who worked on Meet at Google, it seems that it could have been networking to the datacenters where the call is routed from, some issues with UDP comms on your network which triggered a bad fallback to WebRTC over TCP. Could also have been issues with the browser version you used.

Since Teams is using the very old H264 codec and Meet is using VP8 or VP9 depending on the context, it's possible you also had some other issues with bad decoding (usually done in software, but occasionally by the hardware).

Overall, it shouldn't be representative of the experience on Meet that I've seen, even from all the bug reports I've read.