to explain fubar’s reply a bit more detailed: For a crisper image you have to run games at higher resolutions. At/above 1440p things typically start to look good. The higher the resolution, the crisper the image. Caveat: higher resolutions cost performance, so key here is finding the right balance between image quality and performance depending on the game and your PC.
To add resolutions to your PC that it can not display normally, please check the ‘Custom Resolutions’ section in the vorpX help, it contains a step-by-step guide and some additional information.