From my point of view I eliminate all the other possible variables: pools, drivers, mixed cards models etc, so is clear that the last possibility that the problem to be from the miner have been confirmed since the problem is not present on another miner software.
Can you please look at this and try to fix it?
Thank you
PM me the log file from my miner.
I will get mb with 13 pcie slots in a couple of days, then I will be able to try to reproduce this issue.
I hope you have 2 molex on motherboard attached.
I have that board with 8 cards. All is fine. Win10/claymore eth 9.8/private beta driver.