Can anyone help me. I'm using claymore 11.2 on my RX 570 and only getting 420 h/s for Monero. My card is bios flashed overclocked and with blockchain drivers. I'm getting on the high ends for claymore ETH 29mhs and zcash 312 sols so I'm confused why it's so insanely low in cryptonote. Also I have tried mining Monero in Minergate software for comparison and im getting 700 h/s so I feel something is definitely wrong.
This does sound low for a RX570 on Monero, I get almost 500 h/s on an R9 270x 2GB mining Cryptonote, and 750 h/s on an RX 470 4GB.
But what I found is that the R9 270x runs much better on Claymore v9.7 than it does on v11.2, so try using earlier version of Claymore and see if that helps.