Option to remove bloat in wordpress

So,

I have a client with a fairly big shop, running into the hunderds of topics, driven by a custom 8 core server with 16GB of ram, and litespeed, configured to have the best compatbility / speed and such.

After today they complained to me that the time to load from jumping to one to another page in wp-admin, that the avg time would stick to 17 seconds (Query Monitor). After i diagnosed, i figured out that upon every call you make within admin, calls are made.

These consist checking on updates or new versions, firing up RSS feeds, the whole thing. So i just disabled the whole show by entering the following in Functions.php:

add_filter( 'site_transient_update_plugins',
    function ( $oUpdatesResult ) {
        if ( ! is_object( $oUpdatesResult ) ) {
            $oUpdatesResult = new stdClass();
        }
        $oUpdatesResult->response = array();
        return $oUpdatesResult;
    },
    PHP_INT_MAX
);

add_filter( 'pre_http_request',
    function ( $bFalse, $aReqParams, $sUrl ) {
        if ( strpos( $sUrl, '//api.wordpress.org/plugins/update-check/1.1/' ) ) {
            $bFalse = null;
        }
        return $bFalse;
    },
    PHP_INT_MAX,
    3
);

add_action('wp_dashboard_setup', 'remove_dashboard_widgets');
function remove_dashboard_widgets () {
remove_meta_box('dashboard_primary', 'dashboard', 'side' ); 
remove_meta_box('dashboard_secondary', 'dashboard', 'side' );
}

add_filter( 'http_request_args', 'wpse_102554_deny_theme_updates', 5, 2 );
function wpse_102554_deny_theme_updates( $r, $url )
{
    if ( 0 !== strpos( $url, 'http://api.wordpress.org/themes/update-check' ) )
        return $r;

    $themes = unserialize( $r['body']['themes'] );
    unset(
        $themes[ get_option( 'template' ) ],
        $themes[ get_option( 'stylesheet' ) ]
    );
    $r['body']['themes'] = serialize( $themes );

    return $r;
}

if ( ! defined( 'ABSPATH' ) ) {
	exit; // Exit if accessed directly.
}

And voila. Avg working time required now less then 2 seconds. How is it possible that wordpress is or has to be filled up with so many stuff that it consumes over 50% of it’s resources alone?

It’s a high end server, with just one site, and a custom pre-configured litespeed in combination with redis object cache. And still slow after most common optimisations. after i disabled it you can actually work now productively instead of having to make coffee every click you make.