I have 2 x AMD Radeon RX580 Gaming 8GB with samsung memory.
from box ethereum hashrate was 24.5 mh/s than I change timings with Polaris Bios editor. I copy from 0:1500 to 0:1625 > 0:1750 >0:2000. after this I get 29.8 ~ 30 but after 2 minuts go down to 20, 14, 10, 7 till 4.1
Then I returned everything back and copy from 0:1625 to 0:1750 >0:2000 and I get stable 27.8 ~ 28.1 power consumption 130 watt
per card. can any help me with proper timings to get stable 30 mh/s
thi is original BIOS image
https://s9.postimg.org/5xbv99xzj/rx540timings.jpg