That's a judgement call I suppose. If you really want to keep at some specific framerate because you think it looks better then use WaitTimer or learn tweening. I still prefer delta time however. It looks pretty smooth to me. Logically there is no apparent slowdown with delta time, except perhaps an apparent strobing at low framerates (which tweening or WaitTimer wouldn't help anyway; the game needs to be optimized so that it will run faster.) Remember, in the delta time technique at lower framerates things move more between frames so the overall movement is exactly the same. To give a specific example, let's say the player is moving at 5 meters/second. At 60 frames/second the player would move .083 meters/frame while at 40 frames/second the player would move .125 meters/frame. Either way the player is moving at a constant 5 meters/second; no faster or slower at different framerates.