This post is a place for me to collect notes on the Astra Theme, specifically how it relates to Divi, the Divi Builder plugin and my own plugins.
Can you use Divi Builder with the Astra Theme?
Yes, you can use Elegant Theme's Divi Builder functionality on your Astra Theme pages and posts. To do so, first install and enable the Divi Builder plugin, along with the Astra Theme. Then when you start a new post / page you should see the option to "Use Divi Builder", like so:
Does Divi Builder work with the Astra LearnDash Starter Site?
However, note that this site is built with the Elementor page builder and as such isn't compatible with Divi or the Divi modules for LearnDash added by my Divi LearnDash Kit. You will still be able to create new pages using the Divi Builder, but you won't be able to edit the existing Elementor ones in Divi Builder.
What's faster, the Divi Theme or Astra with the Divi Builder Plugin?
I don't have any data to back this up at the moment, but my gut feeling is that there may not be too much in it. The bulk of Divi's functionality (and, I think, load time) is contained within the Divi Builder – the rest of the theme being relatively lightweight (mainly just the header and footer, which don't have anything too complex going on). If you ran Divi Builder on Astra, you would replace the header and footer (and a few other bits) with Astra's and might get a small time saving there, but you'd still need to load the Divi Builder functionality. So I think any time saving would end up being a small percentage of the overall page load time.