Pimax loses tracking when IL-2 is run (SOLVED)

[VBF-12_Stick-95]

Have an 8K I am getting up and running with one VIVE LH.  Finally got PiTools to recognize the LH.  All is well until I launch IL-2 (non-Steam version) at which time the LH goes from Ready to  Disconnected and the screen goes all gray.  I figure I am missing some small setting somewhere.  I ran IL-2 on the Pimax prior to receiving the LH with these settings without an issue.

 

PiTools settings v1.0.121 BETA FW 211:

Hidden Area Mask - ON

 

Smart Smoothing - OFF

FFR - OFF

Compatible with parallel projections - ON

FOV - Normal

Refresh Rate - 80

 

My startup sequence is:

Start PiTools

Boot HMD

Start SteamVR from PiTools

Get HMD to show Ready in PiTools

Launch IL-2 from PiTools

 

Thanks for any help.

 

Edited April 27, 2019 by VBF-12_Stick-95

[VBF-12_Stick-95]

Got it.  I moved my Pimax USB cable to a 3.1 port and all is good.