Managing sound and video settings during Teams meetings and calls for optimal communication
I've been having the same issue, and started noticing it in December. Incredibly distracting. Tried other suggested fixes such as uninstalling/reinstalling, opening other video feeds, etc. The only thing that worked for me was installing an older version (1.5.00.28567 found here https://microsoft-teams-for-mac.en.uptodown.com/mac/download/85833794).
For reference I am on a 2020 MacBook Pro, running macOS Monterey with a Intel Core i5 processor.