@bttmrc – Hmm, if rest api requests that don’t return any content are taking 1.15s it likely indicates a large load of plugin/theme code processing on every request. IE some plugin has hooked in some querying or processing functionality that takes time, but they did so in a way that runs every time any request is made rather than only in the admin or only on specific pages etc.
The request itself is simply a call to track popup opens accurately, if you don’t need that you can disable it in our settings page.
Hope that helps. If your issue is resolved please take a moment to rate and review the plugin or support.
If you still need help please message us directly at https://wppopupmaker.com/support/.
