I forgot to add this note to the post.....
In this non AI demo version you can press the F1 key to change the active player.
Pincho the movement is locked at 10 FPS (and that may be pushing DBC to much for multiplayer synchronization).
At speed 1 players move at 1, 2 or 3 pixels per display update. (looks smoother)
At speed 3 the players move at 3, 6 or 9 pixels per display update. (looks more jerky but it still moves at a smooth constant rate)
As long as the system remains responsive to user input, the large move increments do not detract from the game play, However at the higher speed things may move too fast. I suspect that at first you will play on the slowest speed.
The more you see, the more you know.
The more you know, the more you see.