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It might be a problem of the GPU drivers - if you're running Windows 10 uninstall all the drivers and install them via device manager, also make sure your virtual memory is on 16GB. I hope that will help :)

Im running it with ubuntu 16.04 latest drivers available, y have 3 other gtx 1060 different manufacturers only the pny one is not detected with risres i have a box with 10 more risers so risers is not the problem. I have other gpus and tested and they got detected just the pny is not. I will change this card for an asus or gigabyte for further testing thank you!

ok @sigimtz good luck with your rigs! I hope it will work as it should! :)