Need a little help. And in return a little info

1. I did get 6 rx570 nitro+ 4gb to work at the same time. Following that guys driver fix was super easy
2. Strapping them was weird because after the straps no hash increase until you oc memory. Got them to 28mh easy.
3. After strapping them it wont show video until it's all the way into the os. Also had to disable fast boot in power options in windows. Otherwise i would have to unplug the hdmi cable and plug it back in just for video to show. Weird stuff.

Here is my problem. 1450 watts at the wall.

Since i can't fully install the 500 series driver.  I can't install wattman or whatever comes with the driver so msi afterburner can change the voltages.  So i can get all 6 cards to work. No problem. But i can't change voltages at all. How can i get afterburner to control voltages.

My only thought on this would be to install like 2 cards with the 500 series driver.  ddu all drivers. and do driver fix. And point windows at the fixed driver folder again?? I dont know. i have no other way to control voltages with 6  500 series cards. I have a 4 card msi rx580 rig which i can change voltages on bc it's only 4 cards and i don't have to do the driver fix.

How is anybody changing volts on 6 gpu 500 series rigs.

2 results.
rx570 nitro+ 4gb 27-29mh  1250 core and 2000 memory. 1500 strap hynix memory  6 gpu @ 1450 watts
rx580 msi gaming x  solid 29. Up to 31mh.   2150mem, 1150 core, 1750 strap.  -100mv 830watts at the wall on a i7 even 4 gpu total

i have put 100 cards online in the past 60 days. Im at a loss on these 500 series cards. Please help. Ohh and everything i do is dual mine eth+dcr