Notes are not played back consistently around tremolo

Hiya. I have a score that plays back inconsistently. I have extracted the problem part, attached as test.mscz. When playing from the start, around measure 11 the playback becomes very irregular and a number of notes drop out. But when playing from closer before that point, it keeps playing regularly for longer.

In case it's not reproducible on other computers, I have recorded the issue: https://drive.google.com/file/d/1NHlfSHwhWsnoplrPwzVHojgF6sh7XOi5/view?…