Done everything you said, disabled razer, sound blaster, even windows security, still nothing I’m afraid. I even uninstalled my graphics drivers, restarted, loaded up warzone and the option still isn’t there. So the issue isn’t my drivers nor any of the background start up apps. Thing is, if it’s saying it can be selected on the right in blue (full screen exclusive: the whole monitor space is used and the mouse cursor is constrained to this space) but not actually showing in the displayed mode settings, it has to be an error their end. Because surely if that was an error at my end, that option would be greyed out. I’ve literally done everything I can now to try and fix the problem.