If you want a lightweight, single-purpose fix, use the wrapper. Search for a "GTA SA Mouse Fix" .zip file. Extract the dinput8.dll file.
Microsoft altered how legacy DirectInput APIs communicate with the OS starting in Windows 8, breaking compatibility.
The most reliable way to fix this permanently is to add a specific file called dinput8.dll to your game folder. This replaces the bugged DirectInput with a modern "RAWINPUT" system. gta san andreas windows 88110 mouse fixzip
Search for a trusted GTA San Andreas Mouse Fix or dinput8.dll for GTA SA. Reliable community versions are often found on GitHub or Speedrun.com .
The game will automatically load the ASI plugin and fix the mouse issue. If you want a lightweight, single-purpose fix, use
Uncheck , select only CPU 0 , and click OK. Note: You must repeat this every single time you launch the game. Method B: Compatibility Mode
Right-click the .zip folder and extract the contents. You should see a file named DINPUT8.dll . Locate Your Game Folder: Search for a trusted GTA San Andreas Mouse Fix or dinput8
Note: You must repeat this process every single time you launch the game unless you use a shortcut modifier. Method 2: Enable Compatibility Mode