I create my Actor animations myself, not load as an egg file and it seems they are never removed from RAM unless the Actor is removed itself (Actor.cleanup()).
But I’m not sure which graph to look in pstats to see memory usage for animations (animbundles), or if there is any. I’ve only made tests with the “Windows Task Manager” to find the RAM usage and it might be (very) inaccurate.
BTW, I do both
actor.unloadAnims(['anim1', 'anim2', 'etc'])
actor.removeAnimControlDict()on my Actors before loading new animations (again generated, not from eggs), as unloadAnims doesn’t work by itself.