That sounds odd, so not a specific gpu crash, but all gpus drop to 20 MH/s each instead? That's not the typical error scenario really, I wonder what's going on with the rig at that time. You don't see any excessive cpu consumption, and gpu temps are fine all the time, Rave is controlling fans?
Hi kerney666- just fyi my rig hash rate has been stable now for a couple days since I restarted it. So my guess that odd drop in hash rate may have been a pool side problem. Stable and happy with TRM now. Sticking with it because I don't like how Phoenix tends to overstate hash rate. Plus, TRM is about 10W cheaper for my 5x570 rig.