From their website...
iobit:
Overview
Designed to help optimize your PC for smoother, more responsive game play in the latest PC games with the touch of a button, Game Booster helps achieve the performance edge previously only available to highly technical enthusiasts.
It works by defragmenting game directories, temporarily shutting down background processes, cleaning RAM, and intensifying processor performance. That means you can keep all the features of operating systems ready for when you need them, but turn them off when you are ready to get down to serious business – gaming.
Basically shuts everything off that you don't need... with toggles for stuff that you think you may need.
And, to copy more from the same site:
game booster:
1 Click
Game Booster is extremely easy to use. Its intuitive interface makes Game Booster the perfect tool for complete computer beginner.
Speeds up Game Play
Game Booster gives more CPU and RAM to your games, making your games running at the peak performance.
Defragments Game Files
Game Booster can quickly defragment game directories and files, to make your games load and run faster than ever.
Increases Gaming Stability
Game Booster prevents and avoids possible conflicts and incompatibility, by temporarily closing background processes and unnecessary Windows services.
Safe, Secure, and Free
Game Booster does not overclock your hardware, does not change your Windows Registry and system settings. Game Booster is 100% freeware, without any virus, adware, and spyware.
It is, without a doubt, ~the~ most necessary addition to play WGT imho.