I have a website with a principally all core MediaWiki (no added CSS/JS, no backend customizations, no addons) which is also imageless (there are no images); Webpages are generally only text of up to 10,000 bytes each and website is very new (less than two months on the web).
I have the problem of experiencing tremendously slow Time to first byte (TTFB) with my current PaaS-modeled (shared) hosting plan; the problem persist with or without maximal caching, with or without CloudFlare, and with or without both. The support team has no solution for this besides offering me better and yet much more expansive plans.
I can solve my problems by migrating my website from my current shared hosting provider to one of two shared hosting providers which are more "MediaWiki-friendly" and I guess that from both of them I would have chosen the one which gives me much better TTFBs so thus I ask how to know which of two hosting companies would give me better TTFB (if it's at all possible without buying service)?
Did you make sure connections to the website are not bypassing Cloudflare because of dynamic content or some other reason?
I am not sure if I know how to test that but if I understand correctly it's unlikely as the hosting control panel is very straightforward (not even nameservers re-configuration is needed for CloudFlare there); all default with Railgun, etc, no errors appear and MediaWiki is by itself a very "backendish" program.