I have observed this same problem as well-
Note I always follow “good practices” - Close apps, fresh reboot, airplane mode. iPad3, 7.1.2
First time was as follows -
Several Chordbot midi tracks imported into Cubasis - midi notes align properly to grid.
Loaded Sampletank through Audiobus inputting to a Cubasis audio track.
The mix started feeling off, and on closer inspection, I found the audio tracks were all slightly before the beat. Sometimes just by a sample or two, and often by more.
I ended up spending an hour or so on experimenting with the MIDI delay setting, thinking this would be something I could set and forget. I used a couple of drum apps (as visually this made sense) and tested both with a Cubasis midi loop driving the drum machine as notes, as well as just MIDI clock driving an internal drum app pattern. I found I could get it pretty close, but after adding another recorded track the offset would change the required offset again. Sounds very similar to Andy’s tests.
What I think I’m hearing here is this problem is appearing when real time recording is coupled with MIDI. And to be quite honest, I don’t think it’s a Cubasis only issue. I recently was recording some Drumjam via it’s pads into Auria (DJ only receiving clock obviously, but it is quantized in DJ) and the same problem appeared.
I’ll try giving freeze a try when I can to see if there’s a difference here.
Andy - I suppose it’s a left habit over from my beginnings using tape, but I never start a recording on bar 1, always bar 2. In working around this challenge, this habit has proved helpful…