Guild Wars 2

After almost every big world event, in which I as well as all other participants experienced major lag, I get amazing fast speed as you can see in the video.
First 3 creatures are downed mighty fast.
At the last creature, the speed is back to normal.
This can be reproduced 99% of time and it is not a glitch.
I asked others if they experienced such behavior and so far no one reported it.
Have no idea what game “mechanic” is involved but I hope it cannot be reproduced to give someone an unfair advantage.
Also, I would hate to have my account banned for “speed hacking” or something like that when I am actually not.

http://youtu.be/eEq38jvifR8

I also experienced this before. I have not been able to reproduce it since it last happened, though. Anet is aware of the issue. See this thread for more info.