I see that others have had this issue two years ago, but I dont see a resolution. I have a Surface Pro 4 and video chats work find with Zoom, and Skype. When I try Teams video my video shows up green with lines in it then crashes Teams. Team will reopen with an error that it had a glitch. Teams phone calls are ok.
Sounds like a graphic driver issue! Update to latest driver version! Also could be a graphic setting! I don’t know about your device but people with both integrated and separate graphic cards have had troubles with this!
Do a command prompt and type winver to get what windows build you're on to know which download to get. The build number is in the filename so for mine, 17763 so I would download SurfacePro4_Win10_17134_1804501_0.msi since it's the latest version that is available.
Is anyone experiencing issues with GPU percentage going up to 100% between Desktop Windows Manager and Teams, causing audio issues on Microsoft Surface PRO 4? Just started experiencing this issue a couple weeks ago.