We have set up our site on Cloudflare with the hope of improving performance and increasing the security of our site. Our website is built and maintained by a third party.
With Cloudflare switched on we have noticed that sometimes the site response times will sporadically take a nosedive with the worst result from webpagetest.org coming back with a fully loaded time of 36.4 seconds. The company who runs the site for us has asked us to switch Cloudflare off however we would like to keep it enabled, I have confirmed switching off Cloudflare seems to fix the issue.
I have noticed when we run the test at Diagnostic Center | Check SSL and Test Website Security | Cloudflare UK we received back the following error:
The response was slower than 800ms and the requested resource is cacheable on Cloudflare.
I have followed this article to confirm settings are appropriate:
Troubleshooting and optimizing site speed
How do we get to the bottom of what would cause this problem? Thank you in advance for any thoughts or suggestions.