The only thing that bothers me is the movement of the ducks, it feels too "smooth", too realistic: the original was less "curvy", much more straight-line and br

The only thing that bothers me is the movement of the ducks, it feels too "smooth", too realistic: the original was less "curvy", much more straight-line and brutal on direction changes (certainly a simple sign change on the constant directional increment when reaching a boundary). This creates a weird reversed uncanny valley effect.