I'm able to get about 760-790 h/s with 10.2 on my cards. Mix of RX 570s/580s 4GB.
On a 580 8GB I have it gets slightly above 800 h/s but thats about the best I can get so far.
If anyone has gotten higher and have any tips let me know.
Thanks
On my RX 580 8Gb(hynix) 1380/2200 I can reach 840-850 h/s -h 1800 -dmem 1
There is some peoples have 1k+ h/s on 480... I don't know how.