Get up to 300 FPS in Dirty Bomb

You will need to load the shooterenging.ini file which is located here:

C:\Users\ your user name here\Documents\My Games\UnrealEngine3\ShooterGame\Config\ShooterEngine.ini

Now find the following and edit it to your desired settings;

[Engine.Engine] bSmoothFrameRate=TRUE //unlock MinSmoothedFrameRate=120 //or your min MaxSmoothedFrameRate=300 //or whatever you want

Save the file. Then right click on the file and make it read only. This means Dirty Bomb will not override it when it loads the game.