Simplifying Avatars

[JvdBosch]

I finally got my avatars walking in my scene. I recorded paths and let them walk along it with many randomly chosen variables, to let it look like they walk themselves.
But the next problem is the rendering time. With 200 avatars in the scene, the Cull-time is very high. Are there simpler versions of avatars I can use, so the rendertime is shortened and framerate increases?