Change category for products on prestashop is too slow

Hi, I have a lot of products in a category, but I need to change those to another category, with sub categories, this is the route I have for the new category: > IMPORTACION USA>Relojes y Joyas USA>Relojes USA>Relojes de Pulso USA So I decided to use a CSV file because those are like 30k products, and I used lines in the csv structure like this: ID Active Categoria First field is the ID of the product, active is to active the product in case I have pause them, and the category with sub categories using as separator this character "|" The csv template is well done because it actually update the product category, but the issue is that it is doing it TOO SLOW, it takes almost an hour to update like 20 products or less. What I need is this process to be fast as it usually is, like 5 seconds per product, maximum 10 seconds, but it is taking 2 minutes each.