Rename your current config.cfg to config_backup.cfg . This allows you to restore settings if needed.
Replace the values with your desired settings. Rename your current config
If you have found a verified config from a reputable community (like a well-known YouTuber or competitive player), here is how to apply it: Game Version Typical File Name Folder Path MW2 (2009) config.cfg config_mp.cfg Rename your current config
A config.cfg means:
The safest way to get a clean config file is to let the game create one: Rename your current config