How to implement a smart filter in AJAX mode with a large catalog of products?

Question

1C-Bitrix

Hello everyone, I have the following problem. There is a fairly large catalog of goods for 10,000, everything works in ajax mode, however, with some load on the site, the filter does not have time to work out, and the browser gets tired of waiting and throws out a 404 error,

hence the following questions arise:
1) Does it make sense to use ajax with such a long answer
2) How to increase the waiting time. (you can pass timeout in the BX.ajax function or change the default wait value in the core_ajax.js file, but this did not help in any way)

Answer 1

as an option, you can try to use the standard Bitrix features
1) Create a faceted index
2) Connect a composite site
and then take measurements.