First Byte Time

first of all; do make sure you’re using a page caching plugin (which AO is not), because AO will _always_ add _some_ time for the TTFB without a page cache in play.

next; the known issue is most certainly fixed (slowdown due to multibyte-character support, which is now disabled by default).

other then that; so when playing with the settings, have you tried doing only CSS or only JS optimization to see which one is causing the delay? have you tried different settings (e.g. turning the “also optimize inline”-options off) to see if that makes a difference? have you tried excluding some of the CSS or JS (depending on the answer to the first question) to see if that makes a difference?

we’ll get there! ??
frank

Hi and thx for the answer, a cache plugin solved my first byte issue however when setting CDN (cdn.mydomain.com) into the plugin the only thing delivered via CDN is cache/autoptimize/css/autoptimize_8cdd6103eeb77fd3115a87fd2b67f30e.css and not any image or anything else. Should i integrate CDN using a different plugin ?

Thank you

yes, AO only CDN’s the JS, CSS and background images in CSS, so if you want other resources to be CDN’ed you’ll need to use another plugin (some page caches have that ability, e.g. WP Super Cache).

hope this helps,
frank