Thanks a ton I had to alt/enter then go into game settings and change it to full screen borderless. Again thank you.Two things to try:
- When game is running, press ALT + ENTER. This command usually sets apps running in full screen.
- If above doesn't work, further reading: https://www.getdroidtips.com/fix-cod-warzone-changes-my-resolution-and-fullscreen-borderless/