If your mouse is stuck or clicking doesn't work in Grand Theft Auto: San Andreas on Windows 10, it is likely because the game was not designed for modern multi-core processors or newer DirectInput versions.
Open (Ctrl+Shift+Esc) and go to the Details tab. Right-click gta_sa.exe and select Set Affinity . Uncheck All Processors and select only CPU 0 . If your mouse is stuck or clicking doesn't
: Drag and drop the downloaded dinput8.dll file into the main folder where gta_sa.exe is located. If your mouse is stuck or clicking doesn't