I'm not sure if I'm the only one having this issue but when I first launched the game everything was fine, a little slow but still fine. I exited out of there by accident, I thought I was going to the main menu but the game shut down all together, I fire it back up and a screen says something about it being a work in progress and I cannot move my cursor, EVERY single time. Has anyone else had this issue?
Try Alt-tabbing in and out of the game - I noticed it sometimes has issues locking the mouse to the screen.