Hi,
I'll be upfront and tell you right away that I am more than tired of this motherboard. It is the absolute worst I have ever bought. It's also the first GIGABYTE, after years of ASUS.
That said, I don't want to send it back just yet. I am looking for the right configuration to plug my 6 r9 280x with 1x-to-16x PCI-E riser cables. I've gotten at most 5 cards to be recognized, but nothing more. I know both the card and the slot are not faulty. The problematic slots are the last two. They sort of alternate being detected.
Any ideas?