Don't ask about ETH in the Zcash thread. Ask in the Claymore dual miner thread.

I don't think there is a lot of room for ETH mining on a 1080ti. It is significantly more profitable to mine equihash Zcash/ZCL/HUSH on a 1080ti card.  Only a fool would mine ETH with a 1080ti.

You're losing something like $1.10 per day, per GPU if you mine ETH on a 1080 ti.  If you research it a little bit you'll find a 1080ti isn't the right card for mining ETH. You'd be better off buying 2x as many 1070s. They're half the price and do ~30 MH ETH.