Speed up WordPress when you have a lot of terms

The autosuggest procedure can slow down your WordPress wp-admin interface quite a lot when you have a huge amount of terms.

Sometimes it’s useful to just disable this feature to make wp-admin more responsive. You can do this by adding
the following to your functions.php file

add_action( 'admin_init', 'deregister_autosuggest' );
function deregister_autosuggest() {
	if ( is_admin() ) {
		wp_deregister_script( 'suggest' );
	}
}
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