Guys i have the same problem and i cannot fix it ! 6 gpus MSI radeon RX580 with claymore v10.2 i get only 14-15 MHz per card. i have a corsair hx1200 watt psu, Intel celeron cpu g3930 @2.90 GHz, 8 GB memory , Windows 10 x64 bits, SSD sandisk 120 GB hardrive, asrock h110 pro btc motherboard.

Please help me out !!! i tried changing the bios , msi afterburner, pretty much everything.

REgards