with the updated version of Polaris Bios Editor using the supplied timings instead of copying the 1500 timings I get roughly 0.2 - 0.4mh more per card
There appears to be two versions of Polaris Bios Editor V1.6 ?
The one from
https://github.com/jaschaknack/PolarisBiosEditor has the "One Click Timing Patch" option and the other has the option "Apply Ubermix 3.1 Samsung Timings" - both say they they are version 1.6.
I've been using the "Ubermix" version with no problems - can't remember where I downloaded it from.
Does anynoe know what the difference between the 'One Click' and the 'Ubermix' timing are ?
I'll have a go myself and see if I can spot anything - I may be some time figuring this out.