for anyone having an issue with movable point lights casting shadows on meshes imported from google sketchup and exported from 3ds max as fbx files, i set the shadow two sided option to true on the static mesh object that casted a shadow and there was no more flickering for me. i had really bad flickering and this fixed it.
this would be for things like space ships with lights under them, missile objects that are lit, things like that. good luck on your games guys! 
