The Wii Remote driver directly sets the mouse position from the data 
it gets from the Wii Remote. The resolution of the Wii Remote is 
approximately 1024 x 768. So the cursor is bound to jump if you have a 
higher resolution. Remote Buddy does not generate interpolate mouse 
position events with intermediate steps as that'd raise complex timing 
issues and put a lot of load on the OS X event system.

While this is usually not a problem and gives high efficiency, the 
immediate mouse pointer position changes of course will be more 
noticable when you use OS X screen magnification as now the entire 
screen is moving.

Best regards, 
Felix Schwarz