We are having a PHP ajax chat script and we are thinking to use Cloudflare.
The chat script is not nood.js
It just refreshes the page.
Example of the chat script can be found in here https://www.similarcams.com
Will using Cloudflare slowdown the webchat script?
The slowdown should be minimal, generally only adds 50 milliseconds of delay and will probably work for your chat application. For example, the Discord instant chat application uses Cloudflare for everything other than voice chat.