Frame rate control eliminates skips, jumps, and dropped frames. If your video is dropping frames, it's doing it at the worst possible time, in scenes of high motion, which makes a big skip, regardless of the average frame rate.
Most systems grab as much CPU power as they can.
No motion tiling. Usually motion makes small square blocks called tiling artifacts, which arise due to pixel averaging errors in DCT maxi-blocks as picture elements pass from one block to another. Average pixels are neither here, nor there. By eliminating averaging, edges are sharp and clear. Full-screen motion handling.