Make sure the battery is fully charged. Low or dead batteries can affect mouse movement.
Turn off your mouse and try cleaning the mouse sensor on the bottom with compressed air or a Q-tip.
NOTE: Take care in cleaning the sensor - the Performance Mouse MX sensor is sensitive to dust.
Plug the Unifying USB receiver directly and securely into a working USB port on your computer.
Relocate your mouse to a different location or move it closer to your Unifying USB receiver by using the included extender cable. Also see Knowledge Base article 360023387633.
If none of the above solutions resolve your problem, the issue may be caused by software. See Knowledge Base article 360023387633 for instructions on customizing your mouse settings.