What do you guys do for headless starts with AMD RX 470/480 cards on this board? I am unable to apply clocks/volts or fan control to the cards if the onboard vga is enabled, and system doesn't boot if it isn't. I am surprised because these boards are the darling of miners, and these are the ONLY boards that I have encountered this stupid problem on, and I have used several other MSI, Gigabyte, Biostar and even ASrock boards without a hiccup ever. So far this is my understanding of the options :

1) Have an HDMI Cable connected to the primary display adapter and have the monitor powered on when booting the system up, but that means buying multiple monitors and is not cost effective.
2) Buy a dummy HDMI Plug, but even those run upto $15-$20 including shipping, and the costs quickly mount up for a large setup. And besides, the plug has no other use/resale.
3) Hardcode clocks/volts into the card bios - but very few people know how to hardcode vddi/vddc into the bios, and I need to have my cards run on ultra low power settings.
4) Enable On-board VGA, but that means running cards at stock speeds/volts and forgoing the ability to monitor fan speeds and temps. Also, i run windows 10 and apply clocks/volts at each boot using wattool, but if the on board vga is enabled wattool settings arent applied at all, and cards run at stock clocks/volts.

I would like to know if there are any cheap effective hacks that you guys have found and/or use.