I've been having some lag problems on and off since either the 2.1 update or the hotfix patch, kinda hard to pinpoint which one since I didn't pay attention. I'm a PS3 player so I can't try and use any other tool to help fix the problem so this is really an issue at times. It should be noted that I do NOT play on wireless, nor is my computer using wireless for the ping test either.
I ran a ping test to the server I'm on using a program to see if anything noticeable happened.
http://i.imgur.com/YeaHDEG.png
Hop 11 had numerous lag spikes, while Hop 12 had the packet loss.
The sample was over 1000 in about 17 minutes, and there were numerous "100% packet loss" spikes like in the graph but I don't know what the cause of those were directly.
I didn't usually have this issue before, where now it seems like a very consistent problem that is occurring while I'm playing.
I'll do more later and keep posting my results in this post.