Hello Marko,
we decided to disable js combine because we are using Azure CDN that it’s very fast to serve css and js and we are satisfied. We are still getting performance issues when a user login from the frontend because of admin-ajax.php slow interaction. Is it possible to set cache for admin-ajax or a workaround for logged id users? In general admin-ajax is slow on the whole website, we disabled the heartbeat but nothing changed.
Thank you!
Marco