I'm not sure if this is a hardware or software issue, or both. I got my head tracking working in Star Citizen with my Logitech Brio. I am running it at 640x480 with 60fps. It tracks and calibrates (in the window). When I'm in the game, in my ship, and I smoothly turn my head left and right, it doesn't change my monitor smoothly. It has irregular jumps in the motion that trigger my motion sickness. Anyone have any idea's how to fix this? It looks like head tracking is going to be more important with the new hud layouts.