When you say it crashed while generating the realtracks,
have you stoppe the song bevor loading the next?

I had crashes on Windows 10 with BB2016 when i repeated the following a view times:
1. Loading a song an press Play
2. while the song is still playing, open the load sond-dialog-box and load another song.
3. The playing song stopes and the new song is loadad and is starting to generat the realtracks and imediatly after finishing generating, the new song starts to play.

When you repeat this a a couple of times (on my machine about +-15x), BB crashes with a memory vaiolation.

Support told me this is not the way BB should be used.
But it worked that way in older versions without a crash and was very handy when quickly change from one song to another, especially when checking out a library of songs, not built by myself.

Wheter this is a User Error or not is open to question. From my point of view:
If a Programm can not handle a functionality in a specific situation or status of the Programm, the the GUI should not allow the user to select this function.

Since I now open and start playing songs only when i stop the previous song, the memory-vaiolation does not occur anymore.

Regards
Thomas