Hello, why precomuted lighting no working on dynamic objects? for example, player or enemy can’t hide in shadows. I created lighmass importance volume, but nothing.
I resolved problem, need put a tick on Cast Dynamic Shadow, but without this not working 
Hello Int64,
Pre-computed lighting is used to precompute portions of the lighting contribution of lights with stationary and static mobility. You cannot pre-compute something that is dynamic.
Here is some helpful documentation on Lightmass Global Illumination that can help you out with optimizing your scenes lighting.
Hope this helps!