How to build a charcter with high bounds scale?

I use UE4 make a short film(maya export animation fbx),i need to improve the bounds scale(from 1 to10),otherwise the charater will lose in the viewport when the camera too far with the character.
When i build the scene,indirect illumination(GI) will fail,unless i reduce the bounds scale to 1.

Someone know my work correctly?how to build a charcter with high bounds scale?
How to disable the off screen object(determined by bounding scale) hidden fuction or properties?

To keep character visible when the root is out of view just add a physics body to a bone on character. You need to keep bounds in original scale, since GI samples the center of the bound (for point cache). 有其他问题也可以用中文。