Feature Request: Make "stop at" option in the RTA unconditional, and allow numbers starting from 1

When analyzing files or real-time date with the RTA, it would be nice if one could stop the acquisition at a certain frame, starting from 1 (not 2). Also allow stopping unconditionally, not just for averages.
That would make the "stop at" option quite a bit more useful for me, for example reducing external preprocessing (like trimming data to one exact FFT length).

That isn't possible for live data as initial samples are discarded to allow for buffers to flush through. For processing files set the overlap to 0% and the RTA will only process complete FFT lengths of data, any left over samples at the end of the file are ignored.

Understood, but I'm having difficulties to understand where the problem is because the averaging already does work both in real time and with file data. In my understanding all that is needed is using sort of a dummy process instead of the actual averaging process, which just uses the latest acquired frame "as is", and allow the stop downcounter to start at 1 instead of two. After all, the first frame used for the averaging (after buffer filling) must be just as valid as the subsequent ones.

It is not possible with the current implementation and I am not willing to risk introducing bugs by modifying the behaviour to make it possible.