Excluding deforming actors from cache

[bohst]

I have a little problem; We got a few hundred skinned actors (a flock of fishes) over a couple of thousands of frames. We need to cache the simulation but would like to exclude the deformation (skin + mesh) of the fishes from the cache. So basically, we want to cache the positons, velocities and all that but only generate the deformed meshes at rendertime. Right now I don't see how to achieve that and I would be very glad for any suggestions and help regarding that matter :)