Update -

So I have been running 3 cards just fine for coming up on 48 hours, so I'm pretty sure the rig is stable and my issue revolves around the power somehow.


As I explained before, the Zotac 1070 ti Amp Extreme requires 2x 8 pin power, and my EVGA 750 watt G2 Gold's only have 4 VGA ports each, so there isnt enough to run cables directly to each card.  I have the three running now powered directly to the PSU's, but the other 3 I had VGA splitters. 

I had a cable from my PSU connected to one of these:

https://www.amazon.com/gp/product/B07611QXG4/ref=oh_aui_detailpage_o06_s00?ie=UTF8&psc=1

Then that would power a card.  I am new to this so bear with me, is this a no-no?  Or did I just possibly get a bad splitter?  Im fairly certain the system freezes I was having was due to these splitters in some fashion. 

Thanks for any tips!