I also have the exact same issue reported here, and by several other users over the last month.  Completely clean install, finally got a TrackIR... pretty disappointing that I haven't been able to use it in anything other than IL-2 and Elite Dangerous due to a perfect storm of bugs like these.   
Windows 10 x64, up to date. 
Intel i5 750 running at 3.7ghz 
16gb ram 
nVidia GTX 970 dcsPheener.zip