Can't get mine RX580's - 8gb over 4.1mh/s. At stock settings, i have set virtual memory tried all possible intesities and worksizes, finally left it with 23x128 and opencl threads 2. When i overclock it to 1450 core i get 4,3. Why? Can i get you vbios for rx 580 maybe with those memory straps 1500?