my bios is the latest version, i enabled 4g decoding, the gen1,gen2 setting is auto, disable integreted video card, plug hdmi monitor to the first Pcie 16x, m.2 closest to CPU works, the other m.2 doesn't work. I haven't try Windows, I use nvOC, a customized linux, can be found in this forum.
now 8 cards works very stable, 7 1050ti and 1 1060.
btw, CPU is g3900.
if you leave integrated video card enabled, enable "Windows 10" in bios only during installation (no other GPU's connected or bios will complain) and then back to "Windows 10" disabled you don't lose performance on the first GPU as it doesn't need to handle windows graphics

have 2 rigs with each 6 x 1070s running and IGD active - works like a charm and all cards at the same performance
