I would not really classify this as a bug, but maybe something to look into.
I had a scene in the works, and my frames kept dropping lower and lower, down to sub 10fps. Kept getting worse.
I suspected it was related to a plugin, and after removing dynamic limbs, instantly back to 60fps.
The issue was one of my person atoms had a hand clipped into some complex geometry in the CUA environment I was using. Didn't notice until I had the frame rate under control.
Guessing the tracking system used by the plugin was overloaded.
The aforementioned complex geometry was a flower vase on a tabletop. I guess there are too many tiny meshes crammed into one spot.
To be clear, vanilla VAM will have a frame drop if a hand gets stuck in the same situation, but it will clear itself out in a few seconds.
With dynamic limbs active, the frame drops will start to run away and does not stop until the plugin is removed.
I don't know if a fail safe for something like this would be possible without creating edge cases / false positives.
Maybe a blacklist of other atoms that the plugin will ignore?