On the last 2 companies I have been hired we have been paying for teams and still the experience is crappy. I have not seen crashes but however I have seen teams window being totally unresponsive, people complaining about having to reboot their computer because their teams window was unresponsive/laggy during videocall. I mean not just sound and video stuttering like it would with a bad internet connection but the complete window being unreactive. This on all OSes: windows, Mac and Linux. Also the struggle is real when pairing / connecting different headsets/speakers, especially bluetooth ones after the app/browser is started. The device might not appear as selectable, sometimes the sound is coming from one audio device although it is another one that is selected (same with microphone), this is a total shit show.

On a personnal note it is much better for me since I stopped using the app on Linux. I installed microsoft-edge that is now dedicated to it and other Office365 stuff. I still experienced bugs, issues with messages synchronisation between teams running on more than one device or more than one browser. And the mobile app is a complete resource and battery hog, I refuse to install it on my new smartphone.