If you have too many gravity forms and too much data in form entries, you might face a 5-6 sec slowdown.
Adding the following snippet to your code snippet or function file to remove the dashboard widget will resolve the slowdown.
function ad_remove_dashboard_widgets() {
remove_meta_box('rg_forms_dashboard','dashboard','normal');
}
add_action('wp_dashboard_setup', 'ad_remove_dashboard_widgets' );