Merge pull request #899 from edwintorok/emacs27

Emacs27+: reduce number of GCs on startup from 4 to 1

early-init.el

@@ -3,6 +3,9 @@
 ;; Emacs HEAD (27+) introduces early-init.el, which is run before init.el,
 ;; before package and UI initialization happens.
 
+;; Defer garbage collection further back in the startup process
+(setq gc-cons-threshold 268435456)
+
 ;; Package initialize occurs automatically, before `user-init-file' is
 ;; loaded, but after `early-init-file'. Doom handles package
 ;; initialization, so we must prevent Emacs from doing it early!