Hi there;
We do indeed use WP Super Cache, alongside Nginx server side caching, you can just click “delete cache” under settings > WP Super Cache, it works on 10600 second rotation but I have disabled it for you for now so you can conduct the bug fixes.
I can see you removed all the widgets, please note this is a live website taking orders, so please work quickly, these elements are needed, and please also try not to disable any plugins. I have already gone down the route of disabling every plugin bar woocommerce itself and it had only a 2% impact on speed.
The issue lies in the theme core, evidently the PHP errors will be slowing it down, but are unlikely to be the main source… (PHP Strict Standards: Non-static method WPBakeryShortCode::getExtraClass() should not be called statically in /var/www/shuda_dev/public_html/wp-content/themes/legenda/framework/vc.php on line 1579, PHP Strict Standards: Non-static method WPBakeryShortCode::getCSSAnimation() should not be called statically in /var/www/shuda_dev/public_html/wp-content/themes/legenda/framework/vc.php on line 1588 etc.)
The curl request on twitter, theme validation etc. will be waiting on a number of other servers to respond before loading the relevant content, so this will add to the processing time.
However, there is clearly something else incorrect, as there are 48k actions on average page load and I think that’s a little heavy, the init takes 400ms in itself.
Many thanks
Erryn