I have situation like this: I have site with 500+ posts, 10+ custom taxonomies, one of taxonomy have 20000+ terms. When in admin panel I go to Posts-> All posts wordpress opens the page but stops responding (on Chrome “Version 27.0.1453.94 m” and on IE9) and slows down on Firefox 21.0. I have tried disabling all plugins but it didn’t help. So I tried to delete part of code from functions.php in my theme where I create hierarchical custom taxonomy (20000+ terms) and it worked like charm.
peace of functions.php where I create custom taxonomy:
$labels = array(
'name' => _x( 'Apskritys', 'Taxonomy General Name', 'text_domain' ),
'singular_name' => _x( 'Apskritis', 'Taxonomy Singular Name', 'text_domain' ),
);
$args = array(
'labels' => $labels,
'hierarchical' => true,
'public' => true,
'show_ui' => true,
'show_admin_column' => false,
'show_in_nav_menus' => true,
'show_tagcloud' => true,
);
register_taxonomy( 'county', 'post', $args );
I would be very grateful for your advice in this situation!