Right now I have 3 1080’s with an average hashrate of 65.6mh for ETH and 4060mh for SC, combined. My settings are -ethi 14,14,14 and -dcri 186,186,186. I found that the optimal -dcri values for the GTX 1080 is between 180 and 190, depending on the price of ETH and SC.
I used EVGA Precision for overclocking and my settings are:
GTX 1080 SC: 90% power, +140mhz core, +525mhz memory