A new Windows Insider update introduces Default Game Profiles and several quality of life upgrades for the Xbox Ally, improving performance, responsiveness, and overall usability for handheld players.

source https://www.windowscentral.com/hardware/handheld-gaming-pc/xbox-adds-default-game-profiles-in-preview-for-the-xbox-ally-boosting-performance-and-battery-life-for-xbox-ally