Long loading “add to cart”

[cyberage]

Hello,
Please help to fix the problem of long loading button add to cart.
http://sofa4you.com/produkt/kanapa-marconi/
http://sofa4you.com/produkt/kanapa-milos/
http://sofa4you.com/produkt/kanapa-milton/
The site itself works as fast as possible. When I select attribute 1 attribute 2, “add to basket” button is loaded very long. How can this be fixed?
Updating the quantity in the basket also takes a very long time.
Link to movie: https://drive.google.com/file/d/1LncXgOJsSsWyVmpWqmVsykd6R6efx2H3/view?usp=sharing
I’ve been sitting on it for a few days and I do not know what else I can do, please help.

I am not sure if this is the same problem or new but after clicking add to the shopping cart it’s a long time to reload.
The product has many variants so the Post_meta table contains many records.
I think the problem is admin-ajax.php but I can not handle it myself. Come on after adding the code to function.php, I doubt the problem lies with admin-ajax.php. I have to give up my page to Saturday (11.11.2017) and I’m spinning around, I’ve already tried to add to function.php:

/ ** Disable Ajax Call from WooCommerce on front page and posts * /
add_action (‘wp_enqueue_scripts’, ‘dequeue_woocommerce_cart_fragments’, 11);
function dequeue_woocommerce_cart_fragments () {
if (is_front_page ()) || is_single ()) wp_dequeue_script (‘wc-cart-fragments’);
}
Or
add_action (‘init’, ‘my_deregister_heartbeat’, 1);
function my_deregister_heartbeat () {
global $ pagenow;

if (‘post.php’! = $ pagenow

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