So I have an object with a dynamics tag inside of a null to just react when the null moves or rotates with a little jiggle or delay. Works great as long as the animation is short, like 6 seconds. I extended the animation to 30 seconds and it seems the further along the animation is, it breaks. The dynamics seem to work in the viewport, but break during rendering, and then it will just break altogether. Caching does not seem to help once it’s broken. I can adjust the timeline so it bookends only when the dynamics object is in view, cache it, and then it works again.
As always, it could be I just don’t understand it deeply enough, but dang.