Hello,
I'm working on a CPU / firmware mod for the Matrix 1000, I talk about it there:
http://gliglisynth.blogspot.fr/2014/08/new-synth-hacking-project-faster-cpu.html
For now, it includes version 1.1.3 changes and adds:
- Much faster MIDI processing.
- A "turbo" mode where the whole synth engine runs twice faster, that means faster envelopes, LFOs, ...
It's still in alpha stage and other improvements and fixes may still be done (eg: CC for all parameters) but if anyone wants to try it, it's free and uses only relatively common parts.