Hi all. I just set up a couple GPU's in my PC (figured I'd start small before jump into a 6 GPU mining rig, and you can't find cards anywhere). Right now I'm pulling 45ish Mh/s, but after researching I feel like I should be able to get 55-60. I've already done the bios mod (changing the memory timin I believe). I followed a couple guides, yet when I down clock my core clock, and increase my memory clock I only get 11 Mh/s per card. I'm not sure what steps I'm doing wrong. Any help would be greatly appreciated!

ETA: sorry, forgot to add some info. I'm trying to dual mine using Claymore (latest version) ethereum and siacoin (my siacoin hashrate is 1400 Mh/s, don't know if this is good or not). I'm on 17.4.4 AMD drivers. I'm pool mining on Nanopool. And the cards are both PowerColor RX 580's. One is a Red Devil and the other is a Red Dragon.