In majority of the rigs I have, benchmark fails on some algorithms. To make things worse, it's not the same algorithm on every card, some card would pass all but one benchmark ("Failed - try precise", or simply "Terminated") and another card would fail on almost all of the benchmarks.

What have i tried:
- using different risers
- different drivers
- trying Gen1, Gen2, Gen3 mode for PCI-E slot
- running quick, standard, precise benchmarks. This never helped - the card that fails standard benchmark would always fail precise as well.
- shuffling cards in different slots (this would help sometimes!)

Motherboard in all the rigs is Asrock H110 Pro BTC+ (13 PCIe slots), cards are either Asus RX470 mining edition or Gigabyte P106 6G

What course of action do you suggest in solving this problem?