To fix mouse lag, locate TdInput.ini in your Documents folder and set EnableMousesmoothing=False .

These tools often fix issues like mouse smoothing or frame rate caps. 3. Essential Post-Install Fixes

If using the GOG version on a non-Windows system, you may need a wrapper like Porting Kit .

Since the file is a .zip archive, you must extract its contents before you can use them.

Depending on what was inside the .zip , follow the appropriate steps:

Ensure you trust the source of the .zip file. If the file size is very small (under 100MB), it is likely a mod or a fix; if it is 6GB–8GB, it is likely the full game. Always scan .exe files with antivirus software before running them.