CD

Cloudflare Developers•6mo ago

Seb

Cloudflare (400ms) vs Letsencrypt (16ms) Performance

Hi Cloudflare team and community!

First off, thank you for the amazing products — I’ve been a long-time user and really appreciate both the service and the generosity of the free tier.

I'm currently running into some performance issues with one of our apps and hoping to get some input.

I've attached two screenshots showing a basic HTTP OPTIONS request to our backend. This behavior is consistent across similar requests:

• With Cloudflare (free-tier proxy enabled), the request takes 400ms+
• Without Cloudflare / using only Let's Encrypt, it drops to ~16ms

Any idea what might be causing this latency? Would love some guidance or pointers.

Thanks in advance!