I'm a professional composer (not a tech, as will be obvious as you read further) and I finally upgraded to Logic X last week. I waited for a long time to make sure that the 3rd party 32-bit bridges were sound and I took the plunge.
However I'm having a devil of a time figuring out an issue that no one else seems to be having:
Periodically, the MIDI will drop out in playback just for 5ms or so, nothing major but enough to be really annoying. Playback doesn't stutter, it stays in time, and the audio is fine - it's just the MIDI. I can't seem to always recreate the problem except most of the time if I delete a track, there's a brief lag in playback which is essentially the "sound" of the problem. I've gone back and made sure I never had this issue in 9 (even the deleting a track in 9 doesn't make the playback drop out)
It's like the computer is "thinking" and puts the MIDI on hold for a brief second but the playback stays constant. And the drop out is not always reliant on me giving it a command, sometimes it'll just do it when I haven't touched anything.
I've messed around with the processing threads (currently 12), the buffer range (currently small) and a host of other things but I can't get it to not do it. It will do it if I edit the MIDI in realtime but only sometimes. The only time I can get it to do it is when I delete a track, and that's still not every time.
I guess my question is this: is Logic X using different processing than 9? I can't understand why it's not rock-solid for me like 9 - nothing has changed except the software. Does X not like my interface or something? Is it not using the cores in my MP correctly? Am I an idiot? (don't answer that)
Help! My workflow is suffering. I'm about to have to go back to 9 if I can't figure this out.
MacPro 3.5GHz 6-core Intel Xeon E5
64 GB 1866 MHz DDR3
External thunderbolt drives for Audio and Samples
RME Hammerfall DSP Multiface II firewire with a PCIe box to thunderbolt
Logic X 10.2.2