@Dojo76, Hi buddy, sorry for the 2 month delay responding to you. Did you ever get anywhere with the 4-port splitter card in the USB (PCIE signalling) port? I can’t see any reason why this would not work but there may be motherboard limitations we are not aware of. I am very interested if you managed to get over the 11 GPU limit.
I did (kinda) fix my random crashing by upping a few more volts here and there
It does still randomly crash every week or so