Can offer significant speedup while using oh-my-zsh/prezto with zgen.
Should be loaded before any other plugin.
if ! zgen saved; then
zgen load seletskiy/zsh-zgen-compinit-tweak
# all other initialization
zgen save
fi
Check zsh launch time before and after!
$ time zsh -ic exit
zsh -ic exit 0.05s user 0.02s system 83% cpu 0.075 total