Performance Issues with Divi Theme - Significant Slowdown in Latest Versions

[bartez]

Description:

We have been facing performance issues with our website running on the Divi theme for some time. Generating the HTML document takes a significantly long time, even though neither the server configuration nor the page layout has been changed.

I compared the performance of the same website using an older version of Divi (4.23) from a year ago, and there is a noticeable difference in speed. The current version of Divi not only slows down the pages but also impacts the overall performance of WordPress, making the admin panel much slower than it should be. Divi shouldn't have such a performance overhead.

I am providing reports from Code Profiler Pro, which clearly show that the older version of Divi has much less impact on page generation times compared to the current version. Sometimes, the page takes up to 20 seconds to load, whereas on the older version, it was around 3-5 seconds.

I am unsure from which version of Divi these issues started to appear, but they have become increasingly problematic.

Steps to Reproduce:

Load the website with the current version of Divi.
Compare the loading time to a version running Divi 4.23.
Analyze the performance impact using Codex Profiler Pro.
Expected Behavior: The website should load within a reasonable timeframe (3-5 seconds) without affecting the WordPress admin panel's performance.

Actual Behavior: The website frequently takes up to 20 seconds to load, and the admin panel is significantly slower than expected.

Environment:

Website: https://ekowitryna.pl (at now is downgraded to 4.23)
WordPress Version: 6.7.1 (Woocommerce 9.4.2)
Divi Version: 4.27.3

Code Profiler Pro reports for both Divi versions:
Divi_profiler_report.zip