Okay so what I've found with this miner, is that it's only worth while if you're using 1080's or higher. The issue I've found is that hashrates deteriorate significantly as time goes on. I go from 6300kh/s, 8hours later, sitting at around 5800kh/s.
I don't think the 1080's are excluded from this issue.. My 1080 ti sits around 1850kh/s at 215watts normally, but at any time it can drop to 1550 and jump up to 240watts and sit there, requiring a reboot to snap it out of that funk. My 1070ti on the other hand sits at 1440kh/s and doesn't have this dropped rate issue, so I dunno what's going on there. Hasn't been a dev response to any of the feedback in days.