Just discovered and using this from ethos (Ubuntu) and so far, seems like I'm getting about 20% hash rate improvement on RX470/570/580, so the 1% dev fee is definitely worth it.

These are stock values, no o/c (all cards are bios modded for eth mining though).

RX 470 = 14.59 - 15.3 mh/s
RX 570 = 15.8 mh/s
RX 580 = 18.65 mh/s

Thank you, Great job!

Will continue to check in to see when you fix the eth issues, would be great to have another alternative eth miner and maybe even more mh/s than claymore ?