Sets GameDVR_EFSEFeatureFlags = 0, the final member of the Fullscreen-Optimizations override group. With all four GameConfigStore keys set, Windows fully stops force-routing exclusive-fullscreen games through the desktop compositor — eliminating the extra frame of latency and the Alt-Tab black-flash on DX9/10/11 titles. Safe; takes effect on next game launch.
MaxTweaks applies this tweak with one click and snapshots your original setting first, so you can revert it cleanly at any time. A System Restore point is offered before batch changes, and every tweak links to its official source.
Get MaxTweaksOfficial documentation: https://learn.microsoft.com/en-us/windows/win32/direct3darticles/dxgi-best-practices