Huh, looks like I was right. Picture #8 in your last post shows the correct XMP dropdown/list/setting. (="Extreme Memory Profile X.M.P." it's below the booster setting) Set this to XMP 1 or XMP 2 and your memory will run at the advertized speed. (set xmp booster to disabled)
I wouldn't use any "auto boost" or xmp boost stuff in general. Every motherboard manufacturer offers these "marketing bs" auto overclocking or tuning options, under different names, and sometimes it's hard to tell if it's that, or if it's a legit setting like automatic clock speeds for CPU. We don't want to interfere or use manual clock speeds for CPUs nowadays. (Just as example)
edit (pic#6) I don't think you're supposed to mess with the memory multiplier/speeds, that's for "manual mode", if you don't want to use the profile. On my system i could not find the "xmp" setting right away so I just punched in clock speed, timings and voltage manually until I found out on AMD systems they call XMP DOCP or something. 🙂
79Au's post in X.M.P. Active = Game Crash ? was marked as the answer