Not really sure why this patch is awfully slow. If I adjust one of the pixels individually (in p pixel, which is in p pixelboard) it runs great and smooth. If I adjust them all together via the main color picker I already get major slowdowns (around 6fps). If the midi signal from the midi piano (yamaha p140) controls the pixels it becomes even more slow (fps says 2000 but the whole UI is just not responding).
I first thought it would be the 53 lcd objects that were destroying performance, but after stripping the patch to the bare minimum it still has the same performance. I attached both the original and the stripped version to this post.
This is on a 2.4GHz i7 MacBook Pro, 16GB RAM and Radeon HD 6770M 1024 MB. MacOS X 10.7.5. Max 6.0.7.