This plugin manage modular skeletal meshes merging them into a single mesh. This will reduce drawcalls increasing performance. This system can also add and remove modular parts runtime. Demo template using the default UE4 mannequin and some different custom skeletal meshes.
Run this project to see the difference between separate skeletal components and merged skeletal meshes. Select the amount from 0 to 200 and select the actor type. You'll see the submesh list on the top left corner of your screen. Use the diagnostics tool to see the difference.