I could use a little help with those that are experienced with the Biostar TB250 pro.  I bought a couple to try them out and they are appearing to be real pieces of shit.  I can't get either board to recognize more than 4 cards.  As soon as I install the 5th card, the drivers go bonkers and then only one of the cards posts.  I am trying to install 6 Sapphire rx nitro+ 570 8g cards.  I have enabled mining in the bios and set everything on Gen 2, but this f'ing board will not recognize more than 4 cards.  I have changed all the cards, all the risers three times, tested 2 power supplies, and can't seem to get anywhere.  I have installed the August 23rd block chain drivers, as well as a host of older drivers in Windows 10 to no avail.  Anyone else suffered through this kind of fun and was victorious?  Please share.  Thanks.