Rent cost hign over 30-40% normal ZEC mining cost with luck =100%, miners can dump for electric cost and go to another coins, but renters have to accept to lose by ZEC/BTC crash 10-20% rate(up to 30%/day). PPLNS is gameover for renter
clearly.now lend hash mining zec is losing money with the low price ,but i am still mining , i believe the price will rise again