Lossless Scaling scales any windowed game to fullscreen correctly without blur. When you run the game fullscreen at a resolution less than the native display resolution, the graphics driver uses bilinear interpolation of the image resulting in blurring and loss of quality.
Lossless Scaling makes a game window borderless and scales it to fullscreen using integer multipliers. The output image maintains its original clarity and integrity. Additionally you can enable fullscreen anti-aliasing in the app even if the game has no such option.