Yes, I had a couple of the Gigabyte Radeon RX 560 4GB OC GDDR5 GV-RX560OC-4GD - Were locked to 896 shaders, Micron memory, so after some searching and following some instruction I unlocked them to 1024 shaders, also found a custom strap for Micron memory flashed it all back and managed to get 13.6MH/s.

Also purchased some Gigabyte Radeon RX 560 4GB Gaming OC, running PBE OneClick, getting around 14.8MH\s at the moment.