Thanks for your feedback!! Hmmm... maybe the mouse is stuck because the sensitivity is low? The settings can be found on the lower left-hand corner of the menu on the poorly made "cogwheel" icon, and you can adjust the sensitivity from there, along with a few other things. I just used the basic FPS Controller built-in with unity, too. Also, I had no idea the sliders were interactable until now! Thanks dude!! I'll push a new update with patches soon, and maybe some more... ;)