I opened android developer options and tracked the refresh rate. It seems when the screen detects you are no longer interacting with the screen, it bounces to 60 hz from 120, creating stutters. For example, when swiping left or right on photos in gallery, it says 120 then switches to 60 as you let go, creating visible stuttering. Apparently samsung knows about this and is working on a fix. When I'm writing this the screen is at 60 but when I scroll down, it moves to 120. Obviously this isn't normal behavior, but I wanted to show everyone insight on what the phone is doing and that you're not the only one with this issue. This is also why keyboard stutters as you aren't interacting with screen while waiting for it to pop up. The one or half a second you aren't touching the phone, the bug switches hz, creating a mess. There is only 120-60 and no "adaptive" refresh rate in android 12 (obviously not intended) Hope this helps!
