iOs Shadows and performance

Hi all,
I’m using the pro version of Unity and the iOs thingy. My game has a level editor and this means that almost everything is moveable, so I can’t lightmap the shadows of my scene. The thing is, if I try adding realtime shadows, the framerate drops from 60fps to about 45, and I don’t like this (also, the shadow looks “blocky”). I was wondering if there’s another way of having good looking shadows without hitting the performance too much. Also, what other performance optimizations are usually done for an iOs game? occlusion culling?

Thanks

You can use Light Probes if your objects aren’t statics in the scene

have you checked out Sunshine on assetstore?