Just no way that you can be running 6 GTX1070's from one 850W PS. I cant even run 6 1060's on one with out utilization errors. Had to take one out. Need a bigger PS there on the main. Go for the 75% load rule and it will run cool and solid.
thay
Running 13 GPU from 3,650W worth of power, 240V at 1,810W.
Two parallel miner PSU's with X11 breakout boards connected via 4 pin connector to the mobo. I should have plenty of juice, maybe a hardware issue.