Set your game to Windowed or Borderless Windowed mode. The app scales the game's window rather than taking over exclusive fullscreen.
: Version 3.1 significantly refines timestamp filtering, which sharpens details during rapid motion and minimizes the "ghosting" common in earlier versions like 2.3. Performance Mode : A headline feature of v3.1 is the new Performance Mode Lossless Scaling v3.1.0.0
Click the button in the top right corner of the utility. Set your game to Windowed or Borderless Windowed mode