I am using Claymore GPU miner and CPU and getting very similar Performance.

CPU: 300 H/S
GPU: 335 H/S

I have in an Intel i7-7700k 4.2 GHZ Cpu , 16 GB RAM

AMD Radeon 560 1175 MHz - 1275 MHz 4GB RAM

I have seen others get around 700 h/s with older AMD GPUs.

Are there any settings I can tweak on this miner?