The Ajax loading option allows you to use dynamic content while continuing to enjoy the advantages of caching. With the Ajax option enabled, dynamic triggers will be rendered in a separate request that will happen after the loading of the cached version.
There are two options to enable Ajax loading. Via the plugin settings for all trigger together or by adding a parameter to the shortcode of a specific trigger.
On your WordPress Dashboard, go to If-So > Settings and check the “Render triggers via Ajax” checkbox.
To make a specific trigger load with Ajax you can add the parameter ajax=”yes” to the trigger shortcode:
[ifso id="123" ajax="yes"]
When Ajax Loading is enabled, the static content of the page is served from the cache, and the dynamic content is rendered moments after. Naturally, there will be a delay between the loading time of the two. The length of the delay depends on numerous factors, like the way your site is built, your server, the amount of the dynamic content, and so on.