Cloudflare slow loading with Synology NAS

So I’ve been having some issues with site and services running slow through Cloudflare. When using my DDNS, or local IP, everything works fine. I’ve tested the Cloudflare settings a ton, but chalked it up to something with the new NAS. Pages would load, but not always complete. And loading times took much longer than expected.

Just recently I decided to delve into the issue again. I had forgotten that I had upgraded my router along with my NAS. After exhausting all avenues, I found the DDOS protection on the router’s firewall was to blame. Apparently it doesn’t play well with Cloudflare.

Hope this helps someone having similar issues.