I've learned to live with these 3-4 second freezes, as they don't happen in combat all that often, but now I'm stuck on a quests that requires me to follow an NPC. Well I lose them and fail because I can't go 30 seconds without the game freezing.
This has been a problem since beta and if you've decided to not address it, it's not worth your time or something, then fine. Just tell us so I can cancel my subscription.