I have 6 RX 580's, modded them all seperately one by one to 30.2 Mh/s on ETH only mode. When I plug all 6 cards in and run the ETH only mode I get 5 cards running 20 Mh/s and the last one 30 Mh/s. Anyone knows why? When running other algo's they run all 6 with the same speed