Look for . Set this to match your CPU's physical core count (usually between 6-10) to ensure full hardware utilization. 2. Check In-Game Display Settings

This is but engine/OS timing issues + improper frame limiter behavior.

Launch the game and verify FPS:

If the game thinks your monitor is running at 90Hz (instead of 144Hz or 240Hz), it will cap FPS to half that rate. Sometimes Windows Update resets your refresh rate.

: Some players find that toggling this Windows setting (found under System > Display > Graphics) can release stuck frame caps, though a PC restart is required Resizable Bar (ReBar) Conflict : In the newer MW3 (2023), some users report that disabling ReBar