Can anybody confirm NVIDIA inspector is incompitable with P106-100 CARDS ?
I can confirm that it works fine with P102/P104/P106 cards in WDDM mode with any recent driver version.
When you use WDDM mode don't your cards become with 43 errors? When I switch the driver from TCC to WDDM (nvidia-smi -dm 0) all my cards become with 43 error. When I disable driver signature verification it doesn't help. So I consider p102/104/106 don't work with NvidiaInspector.
nope.

Is your mining system WIndows 10 LTSB with latest Nvidia drivers? Do you use internal graphics or 1066 as primary? I see you have not only p104 but 1066 also, maybe here is the sollution for me. I'll try as soon as I can to put one 1066 to the p106 rig to test. I'm trying to make p106 to work with ispector because consumption will be about 10-15 watts lower per card.
Windows 10 x64 1709. currently on 416.34 drivers, I've used all drivers from 384.xx and up and they all work fine with Pxxx cards, except P102-100s - if you want to use them with latest drivers then you need to patch the driver inf file and disable signature verification. not needed for P104s and P106s.
regarding 1066 - that's just one rig with one regular GPU. I always use Intel iGPU as primary. I have several rigs with only P102/P104/P106 cards on H110 Pro BTC+ and B250 Mining Expert MB's and I've never seen anything like the issue you are describing here. just switching the cards to WDDM mode and rebooting always worked for me.