What we know is that Game Mode is added to the same interface that powers Game DVR mode. This is a big update for Windows we’re looking forward to Insiders getting their hands on this new feature for further testing, and we’ll have much more to share on what it is and how it works soon, so stayed tuned. Our vision is for Game Mode to optimize your Windows 10 PC for increased performance in gaming. Windows Insiders will start seeing some of the visual elements for Game Mode this week, with the feature being fully operational in builds shortly thereafter.
With the Creators Update, we’re introducing a new feature called Game Mode. Our goal is to make Windows 10 the best Windows ever for gaming. Microsoft has this to say about game mode: The control is not enabled yet though, and does nothing at this point in time. The option reads: Game Mode makes gaming your PC's top priority to improve your game's quality. If you run the latest Windows 10 Insider Build on the Fast Ring, you can bring up the Game Mode control interface by pressing Windows-G to activate Game DVR mode. The update will be released in April 2017 if the schedule holds. Game Mode will be a part of the upcoming Windows 10 Creators Update.