If a Dub APT Process Control Block has no "room" (i.e. enough "non-signal") to allow the Dub to be pulled forward (or pushed back) if required for alignment, then the Output audio might sound unnaturally speeded up or time compressed (or stretched).

In this case, move the start of the APT Dub Process Control Block further to the left in time, to allow movement of the audio without being wrongly compressed or stretched.

Next topic