I tried a lot of options, but I cant achieve more than 860h, maybe it's because of memory hynix (with samsung memory peoples report 1000h+), I'll have to go back to SG miner. RX 580 8gb with Hynix have 970h. 
Where is the best place to get sgminer as so much information online...
I am trying version 5.5 - is this right one to use ?
Also it is has been ages since I have used sgminer, what setting for a 580 ?