Animation is very slow

[NvdGoorbergh]

Hi, I am trying to make a 3d printed proton pack and came across your github page. I had an arduino laying around with some jewels and bars and thought to give it a try. When I loaded the code onto my Uno or Nano the animation was playing correctly but was very slow. So slow that the startup animation took almost 2 minutes to finish.

It also seems to skip a beat after a few steps. Is that something you also recognize? It happens on both micro controllers.