Filter Mega Filter Pro Plus on Opencart 2 how templates of the SEO category are inherited?

Question

opencart

Hello! 
There was one difficulty in the Mega Filter Pro Plus filter.
The filter has the ability to implement SEO cnc URLs for any filtering attributes, everything is cool and convenient, but I had a problem.
Now there are already more than 10,000 products on the site and on the main page of categories, for example /dveri/, there is a huge number of products and it takes a very long time to load (products are displayed in a list with pictures).
I found a solution to this problem for myself: to remake the template for displaying goods on the main page so that just categories are shown, statically, as I need to write it myself in the description, without a filter.
Tipo: categories - all factories, all engineering systems, etc., and not all goods in a list with the ability to filter.
So, I searched everything I could, I can’t figure out how the NC links in the filter inherit the template from the main category, where it is written and how to change it.
Also, in one way it turned out to turn off all content on the main page of the category, but I can’t turn off the filter, that is, in fact, when the page is opened, it thinks something there, all options appear in the filter as before attribute changes, but there is no product, and because of This page loads in 20 seconds...
Either you need to somehow remove the filter on the main page and redo the template so that the products are not displayed, or find how to change the template inheritance to display the product in the filter.
I would be very grateful for any information, for two days I can not figure it out.
At least tell me which way to move ...
Thank you very much.