In Super Mario World, whenever Mario completes a level, the path to the next level is revealed in a…

In Super Mario World, whenever Mario completes a level, the path to the next level is revealed in a rather slow tile-by-tile manner. It is easy to assume that the effect is deliberate, to lend cinematic weight to the achievement of having beaten the level. However, it turns out that the game is actually trying to perform the animation as fast as possible but is legitimately encountering slowdown…