I write with the help of a translator…
A couple of months ago, I connected one site to Cloudflare for a free tariff. Somehow I didn’t notice right away and didn’t think that this could happen, but now I started analyzing the indicators - I see that the download speed from it has dropped to 200-400 Kb/s. I turn off proxying on Cloudflare in the DNS settings - the speed is restored to the required 7-8 Mb/sec (the server is connected to the 100Mbit channel). I turn it on - again the speed drops tenfold. It turns out that Cloudflare is to blame.
Cloudflare is configured for a minimum of interference with the operation of the site: all caching is turned off, minimal traffic analysis for DDoS is enabled, etc.I even tried to create a firewall rule that skips any traffic and disables any checks on the service side. Nothing helped.
Tell me, what am I doing wrong?