That's just a total BS - stop trolling the guy. Don't use blockchain driver - it's buggy. Use one of the recent drivers (it's never a good idea to use THE most recent one).

But that's really funny that @Hoemas has RX570 and gpu-z shows RX 580. Was it the same before modding bios and patching? I wonder if it's the driver patcher glitch Two things I could think of regarding low hash rate (given that compute mode is "on"): 1. Not enough power, 2. you screwed up during bios mod. Flash the original bios back and start from there.... see if the cards behave as they should