floyd,
Below are my Realtrack settings. If I recall correctly, I think I turned off the "Speed Up Generation of Realtracks". That might help.
![[Linked Image - Only viewable when logged in]](https://www.pgmusic.com/forums/ubbthreads.php?ubb=download&Number=26438&filename=1105 realtrack preferences.jpg)
Also... As an experiment, under "Song Settings", could you activate "This song has playback problems"? This will force BIAB to regenerate the song in its entirety before it starts playing. This could provide some useful insight.
![[Linked Image - Only viewable when logged in]](https://www.pgmusic.com/forums/ubbthreads.php?ubb=download&Number=26439&filename=1105 this song has playback problems.jpg)
Regards,
--Noel