Additional settings-related features and issues within Microsoft Teams Free
Please, run the DirectX diagnostics tool.
Go to Windows Start and in the Run box type dxdiag.exe and press the OK button. This will start the DirectX diagnostics program. Run this diagnostics and save the results to a file.
Attach this file to your next post on this site or post this file on your File Sharing site (e.g. OneDrive) and provide here a sharable link to this site.