Lagspikes and DC's

[roadkillrobin]

Game ran perfectly until around last week.
Now i'm DCing on 10-30min intervals, Sometimes i get a huge lagspike for around 15seconds then game returns to normal. Sometimes that lagspike end up in DC's, Sometimes i just DC straight away. Back to login screen and connects to the game like nothing's wrong. I've tried everything from my end, reseting modem and router. Disable firewalls etz.
Anyone else having these issues??? I love this game, but it gets really frustrating as i can't play with guild, can't do any crafting as you loose the materials if you DC while craftin. Is the DDoS proction blocking something????
I can perfectly stream 4k Videos with my conection. So i doubt it has anything to do with that.