I am note sure if you can help my site hydrohottubs.com has all of a sudden taken a nose dive in speed which i asked my host Krystal to look at as i am on their state of the art onyx platform.
They have advised the following :-
For some reason the homepage is still not being cached (headers are forbidding caching) which means it’s loading in 500-600ms, whereas this would be more like 50-100 if it was cached. The theme also loads hundreds (not exaggerating) of php files on every load which is obviously causing some loading issues. A plugin is likely setting cache-control headers to no-store no-cache, and a cache expiry date of 1981. Both of these will prevent caching.
Any help would be appreciated.