By default, when you install WordPress on sites through the Application Catalog (or Application Vault), WordPress Toolkit detects new installations and integrates them with WordPress Toolkit. For this reason, installation of WordPress on a site takes up to 20 seconds. If you want to avoid this, you can switch off automatic detection of new installations by the WordPress Toolkit.
To do this, in the Plesk configuration file
/<Plesk installation directory>
/admin/conf/panel.ini, add the following lines: