My setup is iPhone 6 + GarageBand iOS + iRig HD + JamUp Pro XT, all latest versions of the software.
I'm currently recording over a song such that I have loaded in an mp3 and am recording my own guitar playing over different parts of the song. About 50-60% of the time, the clip that I record gets completely butchered and jumbled up. Unfortunately I have been unable to find a concrete pattern behind replicating this, but I have tried it both with GarageBand's own interapp audio feature as well as AudioBus and have experienced the issue in both.
Let me know if I can provide any more information that may be needed to replicate/pinpoint the issue. I have found this incredibly frustrating as it is taking me twice as long to record a track because I have to throw out my recorded track half of the time.
