Sporadic CTDs when fast travelling or going through load doors

[MisterMorden]

I've had this CTD 4 times in the last 2 months and I'm in need of a little help remedying it.  So in each of these logs, the relevant objects section has ACTI and REF records with FF prefixes, which I understand are dynamically generated by scrips, listed at the top.  I can't make sense of anything below that but it seems to be the same issue going on each time.  This happens rarely and never in the same place so a binary search will take quite some time to test, I was hoping one of the bright minds here might be able to reduce the scope of my search a bit, lol.  Here are my logs, any help or ideas are appreciated!

https://pastebin.com/PnUNDheF

https://pastebin.com/MaSpN1VH

https://pastebin.com/qn57r9pH

https://pastebin.com/qRDHcdEt

Edited March 22 by MisterMorden
spelling and clarification