I was just running out of the cafeteria towards the dorms on Peragus when suddenly this huge lag happened. When it stopped, I had run into a wall, and now, I can only move sideways. I can pan the camera and select things, but nothing else. I tried saving and exiting, and all the listed camera tricks. I shut it down for the night and will try again today to see if the problem has been fixed. I hope it is.