The dinput8.dll file is a high-priority file that the game loads immediately upon startup. Because of this, it is often used by script extenders and mod loaders (like the SilentPatch or ASI Loaders). If you plan on installing heavy modifications, ensure your mouse fix isn't conflicting with a mod loader. Most modern mod loaders include mouse fix capabilities built-in, so you may not need the standalone zip file if you are already modding the game extensively.
Below are the most effective ways to fix the mouse issue, ranging from simple file additions to system tweaks. 1. The DINPUT8.DLL Fix (Recommended) gta san andreas windows 88110 mouse fixzip