TrackIR 4 shutter in FSX

[SailorDoc]

Running Vista64 Home w/FSX Accel. while in VC view I have just recently been getting this incredible shuttering/flickering from side to side, up and down. So much so that its impossible to fly. This just started. I had the latest drivers then switched back to an earlier version still the same issue. Running in Admin for both FSX and TRIR4 w/vector. Any help greatly appreciated.Switched to a dedicated usb no help.
SailorDoc

[VincentG]

When looking at the tracking screen, TrackIR software -> view -> tracking, what do you see there?

[SailorDoc]

Vincent sorry for the late response. The problem is still unresolved. Actually I have the TrackIR3 w/vector using the latest sw and drivers. Anyway back to your question, I see 3 green lines that move with my head movement. One other thing when I an running FSX, flying the carrier tutorial, while in the paused mode TrackIR works perfectly, its when I unpause that things go haywire. Thanks for the help.
SailorDoc

[VincentG]

The flight, and default profiles both set to vector?

Any other add-ons installed for FSX?

[SailorDoc]

Yes both set to vector. I do have several add ons installed. REX, FEX, Topgun Flight software, Foxy for Thrustmaster HOTAS, CHPro pedals. Also TruView was also selected in TIR. Thanks

[VincentG]

Any add-ons installed, that have a head latency setting?

[SailorDoc]

None that I am aware of.