Did you make any progress on this?  I'm curious about TOLUD as well, though I have been mining successfully on this mobo with 6 Sapphire RX480 Nitro+ OC 8g cards.  Also 4gb memory, though I'm using a Core i3 cpu.  Perhaps that's your limitation?

I'm trying to work through the 7 gpu process, and will put more into it tonight.