3rd Monitor on RX480

I keep having these issues in trying to get a 3rd monitor working on my system.
Other than that, there are really no issues.

First I got a MSI RX480 and only the 2 display ports worked. I've put in the kexts like WhateverGreen, etc. This had me thinking that if I got a card with 3 display ports, I might be able to get the 3rd monitor working.
Well with my XFX RX480 Black edition, it doesn't seem to work. All 3 monitors are plugged in via the 3 display ports.

If anyone has any ideas, I'm open to suggestions.

The one great thing about the Nvidia card was that I just needed the web driver and everything worked well.