PEG Port config. I changed it to gen1
p.s. I now have 8 gpus and onboard graphics running at same time. I am very surprised that no one has gotten 9gpu's to run on widows. I might try with the z270-a that I have coming.
@ssdaytona: which GEN1 config worked for you?
DMI MAX LINK SPEED? PEG PORT CONFIGURATION? PCH CONFIGUTATION?