As long as that's name is ASOCK, i think that hardware is good.
I think this motherboard was designed to run with 12 GPUs more, so half AMD and half Nvidia GPUs installed in order to max it out. At least that's what I can share about my opinion, because we don't have any of this particular unit to test out here.
About some issue come-out, i think that's will be fixed by asrock's technician team.
Actually I've been running 13 rx580 in this
gpu m/b for a few months, without an issue. I am no expert, and everything worked out of the box. I was terrified by some videos I saw, after having bought the cards, but everything runs smoothly...