Rig with 5 rx 5700 xt with settings vram clock speed 1800 to 1810, core 1300 to 1350 MHz and voltage 725 to 800 mv , win 10, amd driver ver 20.4.2. Test it at f2pool, ethermine and nicehase. With teamredminer had no problem at all, no problem at all for 5 days continuously. With phoenix miner 5.4c and 5.3b I had the same problem, when the phoenix was starting after a while (from 1 or 2 min to few hours) 1 or 2 gpus they showed 0 mh while the phoenix continued mining with the other gpus without any message and the volt from the gpu that shows 0 Mh drops to 20 watt at the software and about –100 from the wall.
Αny idea why it does this and how Ι can fix it?