Since moving to P3D V4 I've been having an intermittent problem with chaseplane and trackIR.  

Sometimes (usually when starting a new flight or switching aircraft) even with trackIR selected in camera options and chaseplane control panel showing the green Chaseplane+TrackIR logo in the corner, I get no camera motion whatsoever.   Then completely randomly after a few minutes it will just start to work as normal.   Once it starts working it works fine, but just seems to be a problem if I change aircraft or start a new scenario.

I notice if I'm in flight and I switch the trackIR button on and off in camera advanced options, there is a very slight change in camera position but still camera stays fixed.

Anyone else have same issue at all???

I've noticed that repeatedly entering and exiting any menu, such as display settings, sound settings, etc... then returning to the sim, trackir and chaseplane are frozen, but recovers after roughly 5-10 seconds.