ZSH startup time

I’ve had issues with zsh starting up and running very slowly for a while. I’d assumed the problem simply lay with the number of plugins and other scripts run by oh-my-zsh, but a bit of research has found two solutions that have worked very well for me (your mileage may vary):

• Removing the github plugin. I don’t think I was using it much, if at all, and removing it stoped the noticable delay each time the prompt was shown (Source)
• Adding skip_global_compinit=1 to .zshenv. This dropped the startup time of zsh from ~0.85 seconds to ~0.15 seconds. This was benchmarked using /usr/bin/time zsh -i -c exit (Source)