Is it really so, that mining two coins doesnt decrease Ethereum hashrate? What is the best coin to mine with Ethereum?
Yes it does lower the ethereum hash rate. Most people think the decrease is not significant. Check what to mine for profitability on the second coin, knowing this always changes. I like Decred
But the profits from the second coin outweighs the 2% devfee (instead of 1%) and the decrease in the ethereum hashrate?