What type of setting tweaks did you do? Care to help a newbie with some secret sauce?
I've just started mining. So far only 24 hours hashing.
I've been searching around but can't find bios or afterburner settings for the XFX style rx580's.
It doesn't matter whether it's XFX or any other brand, all that matters is the kind of memory installed and the whole procedure is exactly the same for all Polaris cards:
https://bitcointalk.org/index.php?topic=1954245.0