possibly heavy algos impacted. Wait for next version, until then use 1.6.7
but rx560\4gb work better on 1.6.8
variable rate on 1.6.7 and stable high rate on 1.6.8
use 1.6.8 on cn-heavy for all rx560\4gb ( 3 rig 12 gpu each)
yes, i am trying to tune every card separately, so too much cards and too much settings, i probably messed something for the 4xx 5xx series for heavy algos.
