huh, is this a problem people really have? I just have a plugin that lets me type before zsh loads and I don't really have a problem with this, even before that i didn't really notice a problem since my 'default' configuration is .12s.

   time zsh -i -c exit
  zsh -i -c exit  0.12s user 0.09s system 81% cpu 0.276 total
  ~