GPU Card Specific settings question:

Y'all - I'm running 19-1.4 with three Zotec 1070 Minis. It spends a lot of time between ETH and FTC. I tried turning up the damNmad Algo-specific OC settings (stock in 1bash) and my ETH hashrate went from 82M to 66M. Is there a resource someone could point me to for recommended settings for these card?

Thanks,

Joe