I have the neutral zones set to between 2 and 5, and it at least removes the jitters when I'm looking forward, but I still get them pretty bad when I look in any other direction. For instance, I'll look at the 1 o'clock position and keep steady, yet the screen jitters and makes me dizzy. Not sure if this happens in TIR or not since I don't own it. I've jacked the smoothness up to max, and then to minimum, but I still get the jitters.