Request for information: ISPs and P2P throttling

[Tonberryqueen2]

Bell Canada.
Hamilton, Ontario, Canada.
Between 1:30-1:45am EST, today, I began receiving the Error 90000, and being booted out of the game entirely. I have been lagging profusely, with it getting progressively worse (I thought it was my connection) for a few patches, and lagging even more dreadfully for the last 4-5 days, especially between 8pm and 2am. I usually log off around 3 or 4am. I haven't had much time to play any earlier than that, so I can't say if the lag is there earlier. The lag has been almost intolerable at times, and there is no evidence of any disruption or throttling with regards to any other device in the house. I play on PS3. I repeat, just to be clear, that during the times where the lag is the worst, that I have tested other devices doing multiple things, and the internet and programs that use it run perfectly fine. This means internet tv, multiple smart phones, my 3ds, pcs, everything. The only time I am having a problem with lag, is playing FFXIV. I have no way to test the lag on a pc, as I am not using my own (it is inadequate to run XIV.). Please look into this, as I can barely run dungeons, craft, hunt...do pretty much ANYTHING.