For some reson, if I have my view set to Padlock and I'm using my Track IR, my movements are delayed and smoothed out. By placing it back to SNAP view, it fixes it. I used to restart my computer to fix what I thought was a problem with my sensor but now, I just hit F6 or something to put it back to SNAP view.
You can check your view by pressing alt I and the green lettering at the top will tell you your viewing setting.
MAKE SURE YOUR VIEW IS SET TO SNAP FOR TRACK IR USERS.