Crackles, MIDI Clock issues
I'm experiencing a variety of problems which might be caused by Loopy HD, or iOS6 or the Alesis iODock. Over time, Loopy seems to struggle with incoming MIDI Clock - loops start to drop sync. I also experience crackles in the audio. Both issues disappear if I reload Loopy, but gradually re-emerge.
I'm not doing anything fancy. Basic loops, just 2 or 3 loops per session, no overdubs. The loops are typically 8 bars in duration. iPad2, set to Airplane mode, all networking and bluetooth switched off, no additional apps running, no audiobus. So the only app running on the iPad is Loopy HD, slaved to MIDI Clock from an Alesis Performance Pad Pro.
The VoiceLive Touch 2 receives the same MIDI clock (downstream from Loopy), but it doesnt lose sync over time. It really seems to be Loopy HD struggling to keep its loops in sync over a period of (say) 5 minutes.
The crackles are really annoying and inappropriate for a gig situation, and losing sync at a gig is also unacceptable, so I'm now considering replacing Loopy HD with the Roland RC-505 Loop Station. So my "loop rig" would be RC-505 Loop Station plus VoiceLive Touch 2.
But I really like Loopy, so my question is really this: Are the problems I'm encountering related to Loopy, or the iODock, or something mysterious?