Hi All,
After installed Win7 ultimate 64 bit, driver 391.01 (Nvidia 1060-3GB) then the hashrate at ETC nanopool website ussually down to 30~90Mhz  even total hashrate in my miner is 105Mhz.enyone can help to explain this issue.

My setting in MSI afterburner as follow:
Power limit : 75%
Temp limt : 72~74oC
Core clock : +150MHz
Memory clock : +650Mhz
Fan speed : 80%
Pls help to advise the best setting for mining ETC.
Thank so much.