I recently recieved the FM3 and noticed on quite a few factory presets the CPU overloads and shuts down the sound. I've checked the forum and it doesn't appear that anyone else is having an issue with this. I know that reverb and delays use up more of the cpu and I've tried shutting them off on the presets that I'm having an issue with. Nothing seems to help on those affected presets. I've updated the unit and still nothing helps. I'm hoping it's just a setting that needs to be changed.