Regarding ingame server lag serious issues

[Stoy]

You connect to a series of servers based on your IP's geo-location, it varies slightly due to the programming and the load-balancing system involved and the connection-time-out interval appears to be set to quite a high number (this is bad). Port number has nothing to do with anything, it is simply a method of getting client connections connected to a server in a balanced manner (see: Port Exhaustion, however you can have multiple clients on the same port in this scenario). Any port after 49152 is dynamic, FFXIV seems to use the range 54992 > 55551. Regardless of which port you are connected to you will be connected to the IP of "a server" - but not exactly, as I will go on to explain.

So... Ormuco is a "high bandwidth" company, offering their bandwidth as a cost, perfectly legal. As far as we are concerned, we are connecting to a host in Canada, HOWEVER the official FFXIV game servers we connect to are NOT hosted within the Ormuco premises. The bandwidth Ormuco holds is transparent and can be assigned to whichever service (paying client) that they decide to. So a fraction of their bandwidth (based on payment amount) will be assigned virtually over a secure gateway to the official FFXIV servers most likely based in Japan (SE HQ?). MMO companies do this because they are scared of letting their server-side software fall into the wrong hands.

So to conclude what is happening;
Paying Customers "Us" (Clients) > Ormuco's bandwidth >~ Location with the Physical Servers.
There is a delay between Ormuco and the Physical Servers, but you cannot see it as the transparency of the network is hiding the fact that the servers we appear to be connecting to are not in the place we are connecting to (see: IP Layer Transparency - Firewalls and Routing). They also have some very bad load balancing between the physical servers, one gets COMPLETELY full (Priority Activation) before balancing onto the next (causing the server to lag hardware wise).

This is far beyond our realms of fixing, in my personal experience working as a network administrator on another very popular MMO this does not end well for anyone involved and usually ends up with the servers being hosted in their respective regions AS THEY SHOULD BE, pay for the package where you lock out the Network Provider from accessing the servers.

Heed my words.