performance issues with midi

Hi guys,
I’m new to touch designer so this problem might actually be something pretty silly…
I’m running this simple network:
A sphere distorted by noise SOP which is driven by an audio file. Everything runs smoothly.
I’m using movie out TOP to render a movie with audio to disk. Works fine - the recorded file is pefeclty matched with audio - no problem.
I wanted to use my midi controller to transform the scale of the sphere on the fly. This works as well, however the recorded file lacks sync whenever I moved the midi knob.
I tried going down with antialiasing, turned backface culling on, even changed sphere to box…this issue remains whenever I turn the midi knob.
Any ideas what I am doing wrong?
The PC is not a slow one either + GTX580.
Thanks in advance.

Hey, any chance you could post or email us your file (support@derivative.ca)? We can take a look to see what the problem may be.

just sent an email