OP here, so the rig failed after with Z270-p failed after 10 months, first it failed to boot to WIN10, nevermind tried to switch to Simplemining, the OS on the stick got buggered on booting up. I managed to get 5 cards running on windows after a BIOS update to 1002 (plugging them in one after another with reboots). Rig ran for 15 minutes before the graphics failed...oh well Simplemining atempt 2 on the way...