I will also add to this that it can also effect actual PC games. It's due to the way the program hooks into programs in order to monitor them, some just dont like it. I actually re-installed Bioshock Infinite on steam a couple of days ago, and couldnt get that game to launch at all, having previously finished it years ago. Turns out that it doesnt like the current version of MSI Afterburner, as soon as i disabled that the game loaded up just fine.