This board has plastidip in the socket (due to my own idiocy) and required some pin wiggling to get the 8700k to post with dual channel when I first tried it, so I had kind of assumed/resigned myself to the fact that it was a bit borked, but thought I'd have a final go with my old pot before looking for a replacement. Glad I did
Will hopefully do some more this week, think the chip should have a little more to give and see how mem clocking goes.