Just look for posts on killer e2200 and you will see massive number of posts asking how do you turn it off and why does it causes strange issues.
For all the problems it causes it just is not worth it.
It is mostly marketing to uneducated consumers. It implies it will solve all your problems by making things like game or voice traffic have priority in your network. What they fail to mention is most times the problems are multiple machines in your house using the bandwidth and it can not have any affect on other machines so it does nothing to fix the most common form of this problem.
What it can do is say I am running torrent and uploading lots of files. I also want to run my game. It will make the game traffic go first. BUT this raises the big question of why are you doing something like large file transfers at the same time you are running time sensitive stuff, maybe it would just be simpler to only run the game when performance is key. So then you do not even need a program like this.