Based on all the performance metrics I've seen and various different benchmark videos on Youtube, it looks like MW2 is a severely GPU limited game. My CPU render time is only 3ms at 3440x1440p with a Ryzen 5600x.

Fine-tune over 500 individual settings on the PC version of Modern Warfare II, from keybindings and the ability to play on a controller, to graphics, audio, and interface sliders and toggles. Also, play at any angle, whether that be on an ultrawide monitor or on multiple displays.