Another possible cause for the server lags...
 

I know everyone is on the Dupe band wagon... but hear me out..With the increasing knowledge of low hp aggro kiting and people making bards cause they so..
http://domainshane.com/wp-content/up...Strawberry.jpg
I have even seen wizards and other classes being the "bait" for them, increasing the numbers of NPCentipedes around the world...

What if multiple players are doing this in different zones at the same time...
http://s7.postimg.org/f4rmd2yej/npcentipede1.jpg
http://s24.postimg.org/uz85ofa1h/npcentipede2.jpg
I mean this shit has got to be straining the server someway or another... People always says .. dont look right at it or you will drop to 0 fps.. even my comp lags some looking at this mess..

Bards knocked down the towers

It happens too regularly at the same time for that to be it, in my opinion...

AE kites should not be looked at because they will tax the visual processing power of your computer when it attempts to render all of the mobs at once.

The server does not waste resources in this way. It merely keeps track of where the mobs are and what they are doing. It does this at all times, so rounding them up will not increase the strain on the server at all.

the more threads and attention you give to the DDoSer, the more fun he has doing it.

just my 2cp

How often do you see a bard corpse and mobs wandering back though?

My theory is when the bards die and the mobs disperse thats when the lag lets up...

As long as they run and dont try to zone... That couldnt be holding the server in its hiccup... as soon as they get creme pied.. Server chills out..

/flicks the copper back...

+1 for bards dying

I'll second that. :p