Learn more here: https://www.elegantthemes.com/blog/theme-releases/divi-performance-enhancement-introducing-static-css-file-generation-for-divi

Today we are excited to announce a great Divi performance enhancement that’s going to help Divi websites load a lot faster out of the box. Divi has been updated to support static CSS file generation for both the Divi Builder, The Divi Theme Customizer and the Divi Theme Options. This means that custom design styles will no longer generate in-line CSS upon request and will instead serve static files that can be cached by the browser, ultimately consuming less server resources and speeding up load times for your visitors.