Character-specific lag spikes leading to 90k within 5 minutes of login

[roippi]

General Description: around 0100 EST Sunday morning I was first disconnected from an instanced dungeon with a 90k error. Every subsequent time I now log into that character, I receive increasingly large lag spikes which eventually lead to a 90000 disconnection. The longest I have been able to stay in-game is approximately 20 minutes; the shortest, about 2.

Notably I created a character on a different server and it does -not- have this issue.

Time: 0100 EST, Sep 01 2013 to current time
Frequency: Always
World name: Adamantoise
Character name: Roippi Izricle
NPC name: None
Monster name: None
Class/Level: All classes/levels on my character. Switching to a different class does not ameliorate the issue. Originally occurred on 43 BRD.
Party or solo: Solo
In-game time: n/a
Area and coordinates: All areas
Steps:
1. Login to character
2. Wait. No movement is necessary
3. Lag spikes - up to 30s of non-updating from the server, followed by a burst of "catch-up" behavior.
4. 90000 disconnection.

Connection Specs
- Type of internet connection/provider: RCN Cable, 20 Mbit/s down
- Modem maker/model number: Linksys E1200

Thank you for your attention. I know you guys are swamped at the moment.