Guild Wars 2

PC:
1) P8Z77-V LX
2) Gigabyte HD6870 1GB DDR5
3) Intel i5 3750k
4) Seagate Barracuda 7,200rpm sata 500GB
ISP:
El-Net 4MB/1MB down/up (megabyte, not bit), cable Ethernet

Let me point it straight away: I’ve joined up GW2 like 3 weeks ago. Game was running flawless – no errors, no disconnections, no stuttering no FPS issues or crashes.

That changed with The Bazaar update, i am expiriencing heavy lags at quite regular intervals. Every 30-40s i get 2-4s net lag. Yes, netlag not FPS.

It is so bad i am getting accused of some sort of hacking, i even suspect i got killed once by GM -if there are any- (was in city, no damage in log yet i insta died while chatting and walking around crafting district) suspecting .. i dont know, bot?

Now it got even worse, i can’t do a Dungeon run without 4-10 disconnections. I get kicked out to Character Selection screen or i simply get black screen with some error about lost connection and left with that.

No, i did not install anything. This is my gaming rig – here is GW2 and OS. Nothing more.
No, i called my ISP they did not change anything, not even replaced already malfunctioning switch or hub.

While i get netlags and disconnections and open up a browser (to see if it’s the game itself lagging or it’s my ISP failing) and download something, open some flashy site (like newgrounds.com) or do some pingtest.net or speedtest.net it all is good as always been.

Help? :c