90K connection issues when playing FFXIV

[flarosie]

ISP:
Comcast, United States.

Type of Internet Connection:
XFINITY, cable connection. Hard-wired.

Internet Connection Speed:
60 Mbps.

Date & Time:
Ongoing, always. CST.

Frequency:
Always.

Character Name:
Xhuva Nitsah.

World:
Siren.

Area and Coordinates:
Everywhere?

Party or Solo:
Both.

NPC Name:
Any and none.

Monster Name:
Any and none.

In-Game Time:
All the time. Every 1 hour to 90 minutes.

Steps:
I can’t do anything in-game without 90king. Not solo play, not group play. Not crafting, not gathering, not leveling my chocobo. Not anything. It’s becoming a problem for my static as we’re trying to learn and advance in the Final Coil of Bahamut. I’m the group’s WHM and having me constantly and randomly 90king is a huge inconvenience.

In an attempt to rectify the problem, I've also purchased a $200 router (which I'm wired directly into), have replaced my ethernet card, and purchased a new ethernet cable. My boyfriend plays as well, in the same room, and doesn't have any 90k issues.

PC Specs
-=-=-=-=- System Information -=-=-=-=-
GPU: NVIDIA GeForce GTX 760
RAM: 8GB
CPU: i5-4670k @ 3.40Ghz
Motherboard: ASUS Z97-A
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

[Murtaug]

ISP:
Comcast, United States

Type of connection:
cable connection, using WIFI

Connection speed:
40 Mbps

Date & Time:
Every time I try to play. EST

Frequency:
Always

Character name:
Murtaug Zandar

World:
Mateus

Area and Coordinates:
Anywhere in game, doesn't matter

Party or Solo:
both

NPC name:
any or none

Monster name:
any or none

In-game time:
Anytime. Usually starts about 15 seconds after logging in.

Steps:
It doesn't matter what I'm doing or when I'm trying to play. I can be crafting or questing or just standing still, usually about 15 to 30 seconds after I log in I start lagging terribly and then I get disconnected with a message that says "Connection with the server was lost" and in the bottom right side of the box it says 90000. This problem started about 2 weeks ago and before that I never had an issue trying to play the game. I've tried playing while plugged into the internet directly, and I still have major lag issues and occasionally get the 90k issue.

PC Specs:
model number: ASUS G751JT-TH71
processor: Intel(R) Core(TM) i7-4710HQ CPU @ 2.50GHz
RAM: 24.0 GB Installed
Graphics card: Nvidia GeForce GTX 970M