Tweaking Modern Warfare 2 is definitely more difficult than it was to tweak the original Modern Warfare, since the original allowed you to access the developer’s console, but with a little bit of know-how, you can tweak Modern Warfare 2 without a problem.
First of all, you need to figure out if you have the Steam or non-Steam version of Modern Warfare 2, as this will decide where your configuration file is found. If you have the non-Steam version of Modern Warfare 2, you can find your configuration file here:
“C:UsersUSERNAMEAppDataLocalVirtualStoreActivisionModern Warfare 2Playersconfig_mp.cfg”
If you have the Steam-installed version, you can find the configuration file here:
“C:Program FilesSteamSteamAppsCommonCall of Duty Modern Warfare 2Playersconfig_mp.cfg”
In either case, locate your configuration file (config_mp.cfg) and right-click it. Scroll down to “Open With >” and select Word Pad, or any other text-file editor. Now, scroll down to the bottom of the file, and add a blank line or two to the end of the document before pasting the following in:
//Custom Multiplayer Config Modifications:
//Delete if you experience gameplay issues.
Now, simply add any custom commands you want below that. I might suggest adding the following if your computer is using a multiple video card setup:
seta r_multiGpu “1″
I might also suggest trying some of these out if you’re looking to improve the game’s overall performance:
cl_ maxpackets “100″
Hopefully this helps you improve your MW2 gameplay!