Hello,
We can’t do anything here, because the captcha itself requires a lot of resources, it constantly connects with Google, creates a widget, uploads in style, pictures, scripts, etc.
In this case, speed up the site in next way:
– disable unnecessary plugins via Dashboard > Plugins
– https://gyazo.com/9c09776ec44e357388073873c4de164e – these issues are related to server settings and to your content. Not to theme settings. So, contact your hosting provider to get help with this.
https://wpastra.com/add-expires-headers/
https://kinsta.com/blog/make-fewer-http-requests/
https://wpengine.com/resources/how-to-enable-gzip-compression-for-wordpress/
– In case you need professional help with site optimization you may contact WPKraken team because unfortunately, that is outside the scope of our basic support.
Regards