Adding Cart Rule by Products very slow Ajax (sometimes timeout)

[Veetoutas]

Hi guys,

* The problem is the very slow ajax 9 times out of 10 when trying to add a cart rule by selected products in the back office -> Price rules -> Cart rules -> Conditions (tab).

* When i i go to the 'Conditions tab' and next to 'Restrictions' i mark 'Product selection' i am able to select products form the list and add them to the chosen cart rule.

* When i select a product from the list and press 'Add', the product is added with ajax and moved to 'Selected' but it takes at least 10 seconds and sometimes i even get a timeout.

* This is a pure Prestashop code, not a module. I was wondering if anyone has ever had a problem like this? 

I am attaching the screen shots.

Thanks!