While Call of Duty: Modern Warfare 3 (2011) lacks native controller support on PC, you can use Xpadder to map keyboard and mouse inputs to your gamepad, providing a console-like experience for the SKIDROW version. Essential Xpadder Mapping for MW3
Issue: Aiming feels "floaty" or slow.
Here’s a detailed text about creating and using an Xpadder profile for Call of Duty: Modern Warfare 3 (SKIDROW version). This assumes you’re playing the pirated SKIDROW release on PC with a gamepad (e.g., Xbox 360/One, PS4/PS5, or generic USB controller) since the game lacks native controller support on PC. Xpadder Profile For Call Of Duty- Modern Warfare 3 SKIDROW
Left Stick (Movement)
For the Left Stick, set Dead Zone to 20% and Curve to Aggressive – this makes the digital “WASD” feel more analog. While Call of Duty: Modern Warfare 3 (2011)