Hello, the Frame per second (FPS) will depend mostly on the camera, if the camera is low quality and the FPS are low then there is nothing in the program that would help you to get a better image. One thing you may want to try is to check if the camera you are using there requires any drivers from the manufacturer. If you already have the updates software or drivers for the camera then you may want to try using a different cable to connect the camera to your computer. You can also test the camera using skype or any other program that uses a camera so you can check if the image there is low quality as when you use it in Debut.