htc made his own set up for ah, which works for some, but if your having troubles with stability choose the "relativem movement" option in view set up, this is how track ir was meant to be used. Htc's set up is ralative to your ears, so its a bit more intuative for those who havent used it yet, the "relative movement" option is relative to the plane, which is much more stable tho make sure you move left or right first when checking 6 because its a little tricky getting used too. you will find it much more solid all round once you get used too it, i had alot of friends who had the same initial probs with track ir as you guys seem to be and relative fixed it for em, along with custom set ups, which are a must.