Game randomly hangs, camera/npcs/mobs won't move, spams red text in the smapi log

[ahhh-reptar]

https://smapi.io/log/223cc49438cd419e88e9300d846ca074

I've had this happen a few times over the last few days. In this log while in Immersive Farm Remastered 2, previously in Deep Woods & SDV Expanded's town map/Robin's house exterior map. I can still move the farmer around but the game otherwise basically freezes; monsters and npcs stop moving, weather effects freeze/slide weird, etc.

Error will stop spamming and weather effects will work while game is paused, but the error resumes once the game is unpaused.

I've tried disabling ChildToNPC because I noticed it's listed in the first error chunk of the spam, but then it just doesn't get listed the next time the error goes off.