Seems that Radeon 18.12.1.1 driver brought problem with my rigs and the latest drivers looks good and my rig running well without any problem, Anyway I'm just tetsing the aters for my newly re-build rig, the Phoenix 5.0e bring good result with my RX 570 4gb cards. By the way I'm asking everyone here about my hashrate, I got 27.8MH is it okay for my card? Im mining ethereum right now.