Mouse Settings

Disabling mouseSmoothing and mouseAcceleration allows ArmA 3 to accept raw input from the mouse.

Configuration

Navigate to:

C:\Users\[your_username]\Documents\Arma 3

Open [your_username].Arma3Profile with your preferred text editor.

Set both mouseSmoothing and mouseAcceleration to 0.

Save your changes and close the file. You have successfully disabled mouse smoothing and acceleration.