V3.1 stable on all machines except one, which is a 7 card rig. Few minutes in one of the GPU's ( always at index 1) would report 0 sols/s, the watchdog will restart the miner, and "Desplay driver stopped working, has recovered" error pops up, and then the system just crashes.
Some people pointed out that it could be a riser issue, but I've tried isolating the faulty card by running each card on its own thread, and they work fine. Its only if I run one instance of claymore's with all 7 cards that this problem occurs. I've tried moving from modded bios to stock, different driver versions, and this keeps happening still. Any clues?