With the latest version of GP Premium, there’s an option to have an external CSS file. It’s very easy to implement via appearance > customize > general however there is a dropdown option to “regenerate CSS”.
Is this necessary to do?
Is this just for new CSS changes that are not rendering?
When switching to External file – GP should automatically generate the file.
If it doesn’t then hit the Regenerate CSS button. If you’re not sure hit it anyway 🙂
Yes this can improve performance – as it removes the majority of the CSS that is traditionally inlined in the <head> of the theme. As an external file, it can be cached by the browser, so only loads ONCE on initial load. If you’re using an Cache/Optimization plugin it can be combined as well.