Download Crowd Skinner FREE Unity. 

This pack allows you to render and animate a large number of skinned meshes with great performance!

The default unity animation system can only run hundreds of full skinned and animated characters before noticeable framerate loss occurs. With Crowd Skinner, thousands of fully animated meshes can be displayed at the same time!

How it works
It uses GPU Skinning and GPU Instancing, along with the new Unity Entity Component System, to achieve incredible performance!

2 Modes
It comes with two modes: Hybrid and Full.