Quote Originally Posted by PerzianPenguin',index.php?page=Thread&postID=19857 1#post198571][url='http://www.dual-boxing.com/forums/index.php?page=Thread&threadID=21466
How to increase your internet connection speed for wow. (a better way)[/url]


This may help you.
Give it ago.
I had a similar problem to you.
With movement lag, but followed by intense DCs'.

So check out my fix.
This seems like a good method, also make sure to use the method he explain in like 1 sentence. ( About the TCKDelay or w/e it's called ) that's a great way to decrease ping.

Lastly, hardware MIGHT solve your problem actually. I would look into one of THESE, they are coming out this week, and supposedly they really keep thing "Steady" while playing WoW, which is what you need.