plz help, have 6x rx480 dual 8gb (mod bios) and so many problems with cards, stability and fluctuations 28-29mh/s to 15mh/s and les .....use Claymore 9.2, and 16.11.5 driver, overcloc 1100CC / 2000MC ......
Try 1200/2000 , for me with asm if not core power enough it fluctuate somehow...