I am not if you've been replied but you must know the page score doesn't matter what matters most is the page load time. And if you post page has higher load time than the homephomepage then it definitely heavier. Run the urls on gtmetrix and compare the size of the pages, the heavier the page the longer it takes to load or May be you have insane amount of http request
Almost every CDN comes with cookies. Thays why GtMetrix show false positive almost every time
Bo, there should be no issues. The subdomain is still part of your domain. It just circulates your static content. In my opinion google migh even reward you for that.
Anti ddos, site is faster, everything is CDN'd. And its all for free!
To be honest, hosting plays a key part in site speed.
The initial request time cant be fixed. Go scream at your hosting. I would like to hear back your reaults
Use wp rocket to set settings for cloudflare, it is the most optimal way to setup cloudflare.
First of all, there is a mistake that's pending an edit by mods.
/** Cookie-Free Domain. */
define("WP_CONTENT_URL", "https://static.website.tld");
define('COOKIE_DOMAIN', $_SERVER['HTTP_HOST'] );