Hello there,
Try starting the game as "full screen", or try starting it through steam.
I finally worked out what it was, My Steering wheel was being picked up as a controller and it was trying to use that rather than the mouse. Just turned it off and all good now. Anyone else with the issue may have controllers etc plugged in and that could be causing the issues. I'd tried the different resolutions and fullscreen etc but was just the wheel being picked up.