New Teams - Video freezing

WE FIGURED OUT THE PROBLEM!

It's NOT the PC problem. It happens in my company. First noticed it in some small meetings with a few people. The moment I switched to the old Teams, while the meeting continued, and joined back - it stopped. Then the problem happened to almost everyone on the whole-company call with 40 participants. I figured it out and tested the theory.

It happens when you have participants with different Teams (old and new) and especially, when the meeting was started (not organized, but started) by someone who has a new Teams, while other participants have an old one.

While on the whole-company call, we noticed multiple problems:
1) most participants couldn't join so easily...the joining lasted for a minute or more. Or they had to try multiple times.
2) Many who joined weren't visible, both on camera and in the user list, like they weren't there, but we could hear them speak!
3) Some just didn't show on the camera feed, but their camera was turned on and they could see themselves on the camera feed, but others couldn't.
4) From 40 of us, no one saw everyone on their camera feed, and everyone saw different people!!! So those who could see some people on camera, they didn't see the same people !!!
5) At one moment, the camera feed froze for everyone.

*** Some people had problems since they switched to the new Teams and problems occurred in any meeting. Meetings were breaking, freezing, sometimes the Windows would freeze (hard reset was needed), then freezing during screen sharing...all in all - awful experience and impossible to use.
THIS is interesting as all of us in the company have the same Dell Vostro 3500 (i5 11th gen, 8GB RAM, SSD). Systems are up to date as well as M365.

So, there is a problem when mixing new and old Teams, especially when new Teams start the meeting, but also, for some people, new Teams is like they've installed and run 5 instances of Cyberpunk 2077 on the highest settings. Since we have uniform systems and the same Dell Vostro 3500 model, we all have the same drivers and apps installed and all are updated. And yet, for some, it works just fine.

The bottom line, the problem is not the hardware, but simply that the New Teams is still not ready.