Hey there,
It may be related to ditto lacking a resync algorithm. When working on the Aeros we found it lost synchronization as time passed, for this reason, we made Aeros resync constantly. It’s a guess but possibly could be related.
I do not know if Ditto supports seamless tempo changes of already recorded audio, the shifting sync may be related to this.
Have you searched the forum for some answers yet? This seems related. You may find more!
Some users have found luck by turning off intros on the BeatBuddy. For some reason, Ditto doesn’t like getting the start command after the intro from BB.
We will look into if there’s anything on our side but Aeros has no issue starting on time currently.
Thanks for reporting!