I have a 7 GPU rig made up of (5) GTX 1060's and (2) RX470's. My RX470's are giving me very low hashrates. They fluctuate between 12 mh/s and 18 mh/s. Here is my configuration. Any thoughts?
Did you define manually the Ethereum and Siacoin mining intensity?
GTX1060 can withstand -dcri (Siacoin) up to 40-50 without significant drop in hashrate, while RX470 start to hash ETH slower beginning with -dcri 20-25. Maybe your miner has set automatically a 40-45 intensity, that keeps down ETH hashrate on RX470.
I suggest you to run 2 Claymore instances: one for GTX1060, another for RX470 and adjust Siacoin intensity. Define -di (GPU index) for each instance.