First of all congrats on such an awesome game! It's great and I hope that it gets a userbase soon!
I was playing on the official server and everything was working fine until i bought a mass driver and i tried to zoom in. When I zoomed in it would show textures moving and when I released the zoom i could only move my gun up and down. Tried to switch to blaster and it did the same thing. The only way to reset it is to exit out the client and rejoin. That'd be fine if I would keep my credits. I looked at the logs but there were no errors showing up.