Updated for Total 5.3+
/**
* Alter the superfish menu settings
*
* @link http://wpexplorer-themes.com/total/snippets/sf-menu-options/
*/
add_filter( 'wpex_superfish_params', function( $params ) {
$params['delay'] = 600;
$params['speed'] = 'fast';
$params['speedOut'] = 'fast';
return $params;
}, 10 );