I have changed the settings, as well as done the port forwarding which is suggested in other threads.

FFXIV is an exception to both my Anti Virus and Windows Firewall, and is always running as admin.

My PC is connected through an Ethernet cable, while my PS4 is wireless and still has 0 issues.

As for other methods, I've tried using VPNs, and other third party programs to reroute my connection. I've also tried doing a trace route, however I'm not a very tech savvy person, so allot of the results were lost on me.