This is because of all of the moving objects in a level. You may have noticed that I start different levels at different times. A lot of people complained about how slow this game was, and it is, but I think you'll be in for a surprise to see how fast Sonic can really go! Although anyone can watch it, I highly recommend you play the game first. The run is single segment, done on the Normal Difficulty. I use it to change from ball form to running form without losing speed, and to gain speed (Neo Green Hill is a good example of this). I use the SP because I feel it's easier to Air dash, which is very useful in this run. I did this run using my Game boy Advance SP, which was connected to my Nintendo Gamecube (GBP). Unless I'm mistaken, I believe this is the first sonic speed run ever on SDA! I know people have wanted one for some time now, so I finally decided to submit my run.