I followed the instruccions, N-th timing strap for an N-1 frequency which gives me 22mh (25mh is at stock).
Memshifting from 1500 to down gives me a slight improvement agains stock timmings, 26mh

I ended up here: https://github.com/IndeedMiners/PolarisBiosEditor/issues/2
K4G80325FC is my memory code and none of ubermix timmings worked for me

I applied the straps provided by BoriZka67 and resulting in 31.2mh with 2100/1150 and 97w