WotLK Microfreezes after the core update.

[Labistaja]

Greetings!

I've come across a strange yet a very disturbing issue which started occuring today: microfreezes after every ~2 seconds.
I recorded the occurance of it:

I'm running on a high end setup and usually have around 200 fps. Whenever i'm in a raid group, i'm getting those drops from 200 - (~60) fps.
I've tested other games and they run flawlessly for me, only WoW is like this now, I have tried allocating more memory for the game, did not help, also cleared the cache folder, nothing.

Would really appreciate any kind of suggestions on how to deal with this issue as it's really making the game really unpleasant.

[skullatbash]

while in-game: Menu>Interface>Help>Active "display lua errors"
those freeze might be some addons problem, activing that option you can see which one generates problem.

[Cryptan]

I am having freezing issues as well but different from yours. The moment I login everything freezes for 10-25 seconds. After that everything runs smooth. I found out it doesn't happen if I disable Prat (chat addon) And it also didn't happen on another character, which is in a bank guild, with the addon enabled. It's probably just some setting but I haven't found which one yet.