I'm also finding that the hashrate is 10-15% lower than on my other boards.  Anyone else noticing this?  On ASrock & MSI mobo i can get 28+ mh/s but on this mobo i'm only getting 26mh/s.  I have tweaked the bios of my RX580s but can't get it up to 28+ mh/s

the lack of Afterburner support is a real bummer.  Anyone considering this board should wait and see if newer bios helps.

I do like that fact that new windows drivers allow for 12 AMD + 8nvidia card.  I guess this effectively killed the market for P106-100 cards.