My website became very fast after using Zion Builder
If you are using Elementor or Divi and you do not see the Zion Builder icon, create templates and through SHORTCODE you can add them anywhere so that you can use only the important features in Elementor or Divi and by Perfmatters remove Elementor or Divi from pages where you do not use them Elementor or Divi
You will see that your site has become very fast