Hello everyone
My site uses Cloudflare service.
Today the site started to load very slowly, more than a minute, although yesterday everything was fine and I did not make any changes to our site since yesterday.
Did you encounter such a problem?
Thanks in advance)
hi @Denis_Mak
I already have a same topic open here Cloudflare is slowing website - #11 by kepona2732
it is better you search to find relevant topic in this form before posting new one as it will help decrease duplicate topics I believe
and the answer to your question is : yes
I believe you are also on the free account, is it correct?
thanks
I have PRO acc/ My site - Wordpress Based.
Google speed test cant test my site speed
Maybe you’ve blocked some countries or Google AS number at Cloudflare Firewall? 
Quick tip: Tune-up your PHP values a bit at your server/hosting provider/cPanel if you can:
memory_limit = 256M
max_execution_time = 300
max_input_time = 1000
max_input_vars = 5000 or 7000
post_max_size = 64M
upload_max_filesize = 32M
Also, I would suggest you to give it a try with PHP-OPCache too 
Even it is related to your Web server → can it handle all your web traffic and plugins? Are you using Nginx? Try tuning it a bit too.
Despite of not knowing what kind of type of server you have, hard to tell something more.
Depending on the website type, if possible I would cache it as a static HTML webpage using Cloudflare Page Rules and the Cache Level: Cache Everything option and set the Browser Cache TTL and Edge Cache TTL too → but, as some “login form” like WordPress, you would end up even like having the cached “login/cart/checkout/homepage” page and shown to non-logged in user if using that kind of a Website even when you’re logged in. So, try to set and use Origin Cache Control: On in that case.
Try to use some of the caching plugin for WordPress.
You can also try out Cloudflare APO for WordPress
You can try Argo Smart Routing as this could help you with dynamic content.
It’s impossible to get 100 / 100 using that tool, except if we exclude external 3rd-party scripts and fonts and advertisements (like Google AdSense).
I find this blog which suggest that Cloudflare pro doesn’t really provide any benefit when it come to speed as basically we are in the same pool as free. I suggest you give it a read. thanks
I have to disagree.
Image optimization and compression with Mirage and Polish → needed and working good especially for visitors from mobile users. TCP Turbo too.
Despite Auto Minify, Rocket Loader, Brotli, HTTP/2, HTTP/3, 0-RTT.
And installed caching plugin for WordPress.
And also if you configure WAF and Managed WAF Rules, even with some custom-made Firewall Rules to block out “bad traffic” and “bad bots”, you can free-up and lavarage the job on your origin host/server side due to the unnecessary web traffic which would be generated and needed to be processed.
I have server-side caching configured, CF caching static file minification, CF plugin for WordPress installed
The strangest thing is that since yesterday I have not changed anything on the site and it began to open for a long time. And I can’t understand the reason. If you need a website address for analysis, I can provide it.
The site also loads normally at times, and sometimes more than a minute (the same page)
my reference is to loading speed only, someone have written a blog showing the case study. I am not saying there is no benefit to pro I am saying there is no speed benefit as Cloudflare still slow down your website similar to free account.
image optimisation is a good website optimisation but thats not where the problem is. the problem is that there is some urls which at times slow down the website that much that you can visually see the difference and realise how bad your website’s loading time have become.
only that the instability of performance, I rather have a lower but stable performance than this random slow down of site where content take for ever to load thanks
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