Hey everyone. I recently acquired CoD4 and have everything updated (1.7). The game is installed on my 2007 MBP (2.2GHz, 8600M GT, 4gb RAM). I have been having issues where when playing multiplayer (I do not play singleplayer so I'm not sure whether or not the same problem occurs), the game gets VERY choppy. It gets to a point where I cannot even play and this occurs only about a minute into a game. I checked the fan speed and it will run at >6000RPM. I checked Activity Monitor and the game utilizes about 1.76GB of virtual memory. Unlike CoD2, there is no option to run the game under Rosetta, so I cannot figure out a solution for this problem. Any help will be appreciated!