I have a card Radeon rx560 4gb.
I'm testing and I can't get Over "306H/S"

How do I get this card values from KH/s?
Many reports that this letter can 10/12 KH/S...
How do I get that? I'm using Win10 64 and "Claymore CryptoNote AMD GPU Miner v 10.2 Beta-POOL"

Can someone help me with the settings?