[Chiuso] Performance Issues with Divi Theme Builder When WPML Multilingual CMS is Enabled

Background of the issue:
I am trying to use the Divi Theme Builder with the WPML Multilingual CMS plugin enabled on the Erdheim Chester website. The issue can be seen at link nascosto.

Symptoms:
The Divi Theme Builder takes several minutes to load or save changes when the WPML Multilingual CMS plugin is active. Performance returns to normal when the plugin is disabled.

Questions:
What might be causing the slowdown when using Divi Theme Builder with WPML enabled?
How can I resolve the performance issues with the Divi Theme Builder when WPML is active?