for my side, currently best setting found is 34 clicks from 0 and +1 rebound from recommended setting.
I precise that I wheigh 92 Kg and bike have a top case (I think that it's important).
with less clicks, I've the feelling to slightly lost my rear tyre.
with more clicks, comfort it's to hard for me and mostly for my painful back.
when we're in duo with paniers, I must tighten at maximum rear preload otherwise front of bike is to light above 110 Km/ H
I tried to adjust also front suspensions but I didn't find correct setting for the moment.
So I drive with recommanded settings.
I'll be happy to share with you your prefered configuration.