Teams chat seems to work fine on my 2021 MacBook Pro with M1 processor. We typically use zoom for video calls. MS Outlook on the other hand frequently crashes. Maybe there’s a memory leak issue?
Off-topic but I need to get this off my chest: Outlook on the web is a much better experience than the native app on the Mac.
However, they must have caught wind of this, because there have been some "improvements" recently, where they reduced the vertical screen space with an empty menu line, and it also feels a bit less snappy than before.
I don't know if it's Outlook though. I have similar issues with my Intel MBP, and I don't use Outlook. I slowly drain from 20GB available down to 2, and then I have to restart. It's like living in the early 2000's, restarting all the time.