So for the last 10 years I have been using a TrackIR 3D Pro in the game. Mid Dec 2013 it finally died. I replaced it with a TrackIR 5. Then the fun began. TR5 has better resolution and is much more sensitive than TR3. And almost made me think I had a defective unit.
I kept getting random screen movement blips, or at the absolute wrong moment, TR5 would decide to show me a different view than where I was looking, even holding me there. That's the chits when you've saddled up at 200, pull the trigger and get your 6-view. I thought I was getting strange cross over signaling from my CH products or my Saitek rudder pedals.
As a result of finally solving this problem, I've solved a host of minor USB issues I never realized I've had over the years. I now have 3 external powered HUBs to support USB 1.01, 1.10 and 2.0. After changing TrackIR software versions several times to no avail, I mapped my USB bus and devices thinking I was having bus or device type conflicts causing the errant view signals. Getting my USB house in order this way removed the micro blips form my Variance and Delay line.
So what ultimately caused these errant view switches and screen blips?
Under the Camera tab in the TR5 software is the slider for "Light Filter Threshold". It has values between 30 and 253. By default it was around 120. I had to finally set it to 30 to get the camera to stop responding to my glasses lenses, glasses wire frame, buttons on my shirt, finger nails, possibly my shiny nose. Like I said at the beginning of this post, TR5 is one sensitive device.
Now if I can figure out how to modify my 6-axis profile to make turning my head back to either side, also perform the slight shift out at the same time to look around the head rest as a single motion. That's asking a lot from TR5, and so for now I still use 2-axis mode so I inherit the hps file F10 saved view positions and the 6 views from there. In the heat of a fight I keep forgetting to shift slightly left or right as I turn my head to see back. And 2-axis mode is the only way to have good enough views to furball with an IL2 and aim with the drawing on the fixed windscreen.
I hope Hitech keeps the function which allows hps file view inheritance from 2-axis mode with future game releases.