I play the quad version of Freehand on my Oppo 95 and it's fine BUT what I had to do was re select the Multi channel option by switching between the stereo and multi in the setup menu. You would have noticed from the my thread ( which you responded to the other day).
But as for playing slow, that is a software fault where the digital clock is reading the wrong sample rate. I've never heard of that but I would suggest reinitilising the unit to its original state...yes you will have to put your levels and distance numbers in again, but hoping the initialising will solve your problem.