Viewerframe Mode Exclusive -

Fix: Implement a WM_ACTIVATEAPP handler (Win32) that forces ResetViewport() and re-issues the exclusive command when the window regains focus.

Navigate to your application’s settings panel. Look for tabs labeled , Video , Input , or Advanced . Step 2: Toggle the Exclusive Setting Depending on the software suite, look for terms such as: "Enable Exclusive Mode" "Capture Keyboard/Mouse Exclusively" "DirectX/Vulkan Exclusive Fullscreen" "Lock Peripherals to Frame" Step 3: Define the Release Hotkey viewerframe mode exclusive

You set the game to Fullscreen, but Task Manager shows "Desktop Window Manager" (dwm.exe) still using 2% GPU. You are not in exclusive mode. Fix: Implement a WM_ACTIVATEAPP handler (Win32) that forces