HIS 470 Hynix: Afterburner , moding & hashrate

[steaven]

Hi guys, I'm new in the mining world. So forgive my lacks of knowledge. For short, I've moded my HIS rx470 (Hynix) & it only run at 23.x MH/s in Claymore ETH. I followed the basic steps (using PolarisEditor, copy timming from 1500 to 1650,.....). How can I increase hashrate?
And 1 more problem, Afterburner has no effect to my card?! Can't change anything excepts fan value (can slide the sliders of mem, core,...).