[welkinSL]

When I first switched I mainly rely on easy custom, with minimal lisp code. However, a few issues: 1. many popular packages did NOT implement for custom (e.g. by declaring with defcustom), especially those that are not in MELPA. 2. the built-in customisation is NOT efficient, especially on startup 3. The customisation UI is sometime buggy, especially for themes.

So I ended up switching to configuration with straight + use-package + org-mode after Emacs 29 got released for a while. I done some GC optimisation as well and this made my Emacs startup gone from ~5s to ~1s, also much smoother response in general.