This article will provide information on how to enable or disable the Game mode for a specific game in Windows 10.
Open the game or app which you want to enable or disable the Game mode.
Once the game or app is running, Press the Windows logo and G keys to reveal the game bar.
If you see a dialog with a "Do you want to open the Game bar?" message, check the Yes, this is a game option to see the game bar.
Click on the settings (gear icon) to open the Game bar settings.
(Figure 1.0: Sample Game)
Under the General tab, check Use game mode for this game option to enable the Game mode in the current app. Uncheck the option to disable the Game mode for the current game.
(Figure 2.0: Game Mode Option)