When I use the exact same settings, I get only 19.8 Mh/s
How do you know that the settings are the same if you couldn't even tell the actual clocks? At least powerlimit option works differently in windows and linux, and that alone could mess with your "+xxx" offset kind of overclock. P state for mining could also be different (P0 in Windows and P2 in Linux, for example). Judging from your last screenshot it seems that your cards are working at ~ 1800 MHz core and 4500 MHz memory. What were you clocks in Windows that let you achieve 22-23 MH/s? What are these cards anyway, the most important part for ETH mining with 1060s is the memory brand — which is it with your cards? If you were mining at 22-23 MH/s in Windows then it's very unlikely that you've got Hynix, it's either Samsung or Micron.I used the exact same settings that this other guy posted from simplemining....with the same setup.
Im not at my rig at this time, so I cant check settings for windows atm.... but its weird that the exact same cards, with settings from another user of simplemining OS, gets the right MH/s like I get them on windows...but I cant reproduce it with the same settings as he does...
What clocks are they running at on Windows and SMOS? Are the clocks the same or different? If they're different, then why are they different?