quick tip for Teams: Teams freezing during video call or froze as soon as you turn on your camera... here is a quick tip to fix this....
Tweak Windows registry
Here is another effective way to fix Windows 10 Webcam freezes problem
Press Windows + R, type regedit and ok to open the windows registry editor.
Then navigate to the following key.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows Media Foundation\Platform
just right-click inside the right pane and select New>DWORD (32-bit) value.
Name the new value ‘EnableFrameServerMode’ and make sure its value is set to ‘0’.