admin-ajax seems incredible slow compared with an own and custom service entry point (site.com/wordpress/wp-content/myplugin/rpc.php?....).
In our custom service entry, we actually load only : wp-config.php & wp-load.php and then our RPC handler = 120ms for a RPC request.
When going over admin-ajax.php its 950ms for the same request. Is there anything we can do to speed it up ? IE, can we disable filters, plugins which have nothing to do with our request?
We'd like to switch to admin-ajax but with this performance its simply aweful for user experience.
well, any idea is welcome.