It looks like a “Game Mode” will be coming to the Windows 10 operating system. In an upcoming build of the OS (14997) a feature ominously named “gamemode.dll” has been discovered. This is started speculation of what it might be. Many people think that it could be a special runlevel that is optimized for PC gaming. It is more than likely that when you are in Game Mode the operating system prioritizes CPU, Memory, and GPU allocation to games being run.
Windows Central has said that Game Mode might work like how Xbox One handles running games:
“Our own sources have said this feature works similarly to how Xbox One handles running a game. Xbox OS, when a game is launched, will allocate resources to make sure the game is running the best it possibly can. Up until now, Windows hasn’t had a built-in option for this that benefits games directly, but with the Creators Update that will be changing.”
Right now the Windows 10 Game Mode is not functional, so we are not exactly sure how it will work or if it will only benefit games built on the UWP or the vast Win32 ecosystem.