Beta is totally unplayable due to bug

Last weekend was a blast, I played several hours with my friend and had a great time, everything seemed normal aside from bugs that everyone seemed to experience.

Last night I installed again and launched the game, jumped into a game and when I got control of my character the problem began. Walking is totally fine, but as soon as I try to move my aim, it moves so fast my character spins in circles, its like my dpi is 1 and mouse aim sensitivity is at 100, but neither of those things are accurate. The game is totally unplayable. I updated drivers and no change. Im going to try to reinstall and restart, but I'm not getting my hopes up.

Any ideas on how to fix would be appreciated, I would really like to play.