you can disable paging (swap) i guess apart from launching more things at the same time and letting apps know you have ram for them to cache shit (check app settings some apps do have a how much ram should we use slider like okular the kde pdf viewer) and virtualisation of multiple os’s i can’t think of much
No user replacable battery, no SD card slot, no headphone jack, i’m guessing that since its a new samsung there’s little to none avaliable custom ROMs for it. to be absolutely fair the note 20 ultra I’m using to write this comment is basically the same when it comes to a lack of these things except for the sd card slot.