MS4 crashing during playback and note selection in certain areas in imported score from MS3

Hi everyone, having an issue with this particular score in ms4.

As the title says, ms4 crashes at certain parts during playback as well as note input and selection in certain areas. I'm also unable to publish or export this score without it crashing.
I've imported many scores from ms3 but this is the only one that consistently crashes for me.

Any help would be greatly appreciated. Thanks!