If you are using a PlayStation controller (DualShock 4 or DualSense) or a Switch Pro controller, this method is mandatory because the game natively thinks you are using an Xbox controller.
The game was designed for (Xbox 360). Newer controllers use XInput 1.4 or later, and Windows 10/11 changes how raw input and XInput are handled, causing mismatches in button/axis mapping. splinter cell conviction controller fix
This is widely considered the definitive fix for modern XInput controllers (like Xbox One/Series X) as it removes outdated controller entries that cause mapping errors. If you are using a PlayStation controller (DualShock