Hi Camille,
Thank you for the kind words!
Unfortunately Animate's general performance in recent years has been much worse than that of Flash. This got even worse when the Adobe team introduced the so-called Advanced Layers.
We have reported the issue to them years ago so far and they have not done anything to improve it.
There are, however, some indications that Animate 2024 may have slightly better performance, and also internally we have managed to re-work KineFlex, so in v.7 of EDAP Tools we hope that it will perform much better in Animate and be comparable to how it is in Flash.
Having said all the above though, what you describe sounds quite extreme.
If you like, do a test with one of our sample rigs, for example the Rabbit, to see if they perform better.
If so, you can send us via email one of your rigs to have a look at it and see if some improvements can be made.
Best regards!