My understanding is that animations add to the draw call count, and as such could adversely affect performance in sim. I have a lot of animated keys on the XLS+. Many of them have two parts. One is the day version, and the other is the night version (using a different material). Both parts have their own animation, and only one is ever visible at a given time. If I were to use a animated dummy that both parts linked to would it make a difference? I'm not sure it would as both parts are never displayed together.