Nepomuk is arleady off.
If i do not have autologin i guess booting (when i say booting it’s the time it takes before i can use the pc) will be longer.
i understand what you mean but i’m not really willing to understand in depth the “boot process” 
i’d like to boot quicker For this was the case with 12.1 with the same config for example. I’m not saying it’s that easy but trying to see if it’s possible or not, and why/where