I believe yours Gtx 1060 are 3 Gb cards if your profit is destroyed. I have some of them too. They cannot really mine Ethereum effectively anymore in Windows 10 which is the best Windows platform for mining , they were performing well in Zcash otherwise.

Until the army of Z9 mini and Z9 came to life in the end of July and now four such cards can make only 0.30 mBTC mining Zcash. That is nothing, it means those cards are not worthy anymore, you , me and everyone else should start selling them in Ebay before they become totally worthless.