RX580 Strapped Memory all Samsung

Hi Guys

I am busy fine tuning my first mining rig, my pride and joy - it has 6x RX580 RoG strixx oc editions all with samsung memory in it.

I have managed to strap the 1:1750 to the 1:2000 mem and it boosted my speed per card from 24mh/s to 27Mh/s

I tried the new amd mining drivers and it screwed up my entire rig and struggled for 2 days to get it working again, nicehash crashed everytime it tried to run, eventually got it mining through claymore after resetting all the card settings to default and installing 17.1.1

Long story short it is running super stable but my next step is to tweak it a bit for lower power consumption which is scary to me because I know very little about this step and don't want to screw up the rig now mining stable at 169mh/s on ether.

here is the current stock settings as it is running atm:

https://s4.postimg.org/pmbkgvqbx/rx580_s_strapped.png

Any guidance on what the next best step is would be greatly appreciated, I have read some good guides on under volting and memory clock/core clock settings to use but if anyone has these specific cards and memory and has had some good results your input is greatly appreciated.

I am wary of undervolting and setting clocks and having it crash and become unstable again just when I got it stable again..