Managing sound and video settings during Teams meetings and calls for optimal communication
So we got a note back from Microsoft... I'll paraphrase:
"The product team has developed an update which is expected to be part of an update to the Teams client expect in early March which should address the issue which was related to a change to enable dynamic composition where we skip the composing of a frame if there are no changes. For Mac we need to lock the CVPixelBuffer that represents the composited frame. There was an issue where we were potentially missing the unlocking of a locked pixel buffer before we presented it to display. This resulted in the visual artifacts."