Resolution (Windows):
Teams 2.1 is a WebView2 client, so the way it works is slightly different than other electron apps. Briefly WebView2 apps are applications that use Microsoft Edge's rendering engine to display web content in native apps. They can embed web technologies such as HTML, CSS, and JavaScript.
WebView2 applications require WebView2 Runtime to function. Windows 11 already includes WebView2 Runtime, but Windows 10 does not.
So in Windows 11 there are some inbuilt commands which can help disable GPU acceleration.
Setting User Environment Variable in Windows:
User environment variables are stored in the
HKEY_CURRENT_USER\Environment registry key.
whereas
System environment variables are stored in the HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Environment registry key.
One of the easiest ways is to set the user environment variable using cmd prompt. For disable GPU acceleration, run:
setx WEBVIEW2_ADDITIONAL_BROWSER_ARGUMENTS --disable-gpu