Navigate to your Call of Duty: Black Ops 2 player configuration folder. By default, this is:
Open the original config.ini using Notepad. Navigate to your Call of Duty: Black Ops
Launch Black Ops 2 . If it works, you can slowly revert r_mode to your native resolution, but keep multithreading disabled and refresh rate locked to 60. Because Black Ops 2 uses DirectX 11 legacy code, modern drivers sometimes drop support for specific internal calls. Navigate to your Call of Duty: Black Ops