#38 - Oct. 16, 2010, 8:42 p.m.
I am sorry to hear you have decided to cancel the account due to patch related issues, Rikard. :(
From what I have gathered from your description, your issue seems to pertain specifically to graphical/display/framerate issues. I am not very technical savvy but I was able to find some information that may be of assistance.
If you have not done so already, update your video drivers. Even if your system is relatively new the video drivers may be out of date. Information can be found on the Technical Support Forum in the following thread:
Graphical Issues Since Patch 4.0.1 http://forums.worldofwarcraft.com/thread.html?topicId=27187856635&sid=1 I can’t guarantee this thread will resolve your issue specifically but I posted this in the off chance it will.