Is there any fix for the controller of Saints Row 2 on PC
Solution 1:
Have you considered getting a gamepad for PC? Unfortunately, developers seem to be spending less and less effort on good controls for PC ports of console games. I recently got so fed up with this that I just gave in and bought a USB controller (Assassin's Creed PC controls pushed me over the edge).
I'd recommend an xbox controller (or one of the many cheaper, driver-compatible third-party controllers).