Instant prompt
If your ~/.zshrc loads many plugins, or perhaps just a few slow ones
(for example, pyenv or nvm), you
may have noticed that it takes some time for Zsh to start.
Powerlevel10k can remove Zsh startup lag even if it's not caused by a theme.
This feature is called Instant Prompt. You need to explicitly enable it through p10k configure
or manually. It does what it says on the tin -- prints prompt
instantly upon Zsh startup allowing you to start typing while plugins are still loading.
Other themes increase Zsh startup lag -- some by a lot, others by a just a little. Powerlevel10k removes it outright.