Opening a new topic for visibility as I've previously only reported this issue as a reply on my previous post about the data abort bug.
Since the recent playlist changes have been implemented, I've noticed that playing a file through the file browser from a larger directory (500+ songs) for the first time now takes several seconds of "Loading..", instead of being instantanous like before, and navigating said directories feels quite sluggish as scrolling stutters quite often.
This happens even on the most recent daily builds, tested on several Clip+ devices, and with older builds from before mid-january the browsing and playing speed is fine.
For comparison, the old "[BugFix] playlist.c DIRCACHE stop scanning when changing indices" build from 2023-01-12, which doesn't have the data abort bug, can play files from large directories and navigate their content without any speed issue. That one was the last "true" good build for me (I've resorted to going back to it on my daily driver), as the following ones either have the data abort bug, or navigating larger directories with the file browser is noticeably laggy and there's a significant "Loading.." delay when playing files.
I understand the data abort bug entailed modfying how the playlist is memorized, however after the fixes navigating larger directories and playing files from the file browser has become objectively painful.