Translation of bitra into a "composite site". Is it worth it?

Question

1C-Bitrix

Site on nginx + php-fpm + opcache.
I don’t quite understand whether there will be a gain in responsiveness when converting the site to composite? Provided that the static is given to nginx, and the dynamics is given to php-fpm. Well, opcache is cached.
Server resources are not clogged.

Answer 1

Composite is needed with very high attendance