Starcraft 2 hiccups

[bananawww]

So I recently bought a 15" 2.2ghz i7 mbp (late 2011). It's my first mac, and my only problem with this bad boy is that every 5 seconds it will hiccup while playing starcraft 2. I tried playing on the reccomended settings (mostly ultra), and it was almost unplayable; it stuttered the entire game with a big hiccup every 5 seconds. I tried on all high settings, and it was a little better, but the hiccup was still there every few seconds. Does anyone know how to fix this?

 

[bananawww]

Just noticed a new problem. Whenever I try to join a match, it will load the first half of the game, and then it's like the wireless just shuts off. I monitered the internet speed in iStat, and it just goes down to zero by the time the game is 75% loaded

 

[bananawww]

The speed continues to fluctuate throughout the game. It'll go from 3mbps for a split second and be fine, then it goes back down to 2/1kbps for the next 8 seconds. Can anyone help me out at all with this? I tried resetting my router but that did nothing

 

[bananawww]

I think I found the solution. I followed the steps here: http://osxdaily.com/2011/11/06/lion-wi-fi-problems-solution-mac/

also, I changed the wifi channel I was on