Before we fix the problem, you need to understand why 45 is the magic number. Typically, 45 FPS occurs due to the following technical reasons:
Note: You may need to navigate menus slowly due to the low framerate. cod mw3 45 fps fix
You have a high-refresh monitor. Your PC ran Modern Warfare 2 at 144+ FPS. But suddenly, Modern Warfare 3 feels sluggish, stuck around no matter what graphics settings you change. Before we fix the problem, you need to