Only Render infront of Character [BP] [4.11]

Hey, lately i came across a Problem with my Project.
Since it is an open World Game, it takes a lot of ressources to render Objects like Trees Bushes etc.
I realized that Unreal always renders 360° around the player. That means 180° are rendered even the Player can’t even see it.

So wouldn’t it be great to render only the 180° infornt of the Player to save some Hardware ressources?
Is that possible? I am using BP.

The following image should make you understand what i mean:

Thanks in advance!

From what I know the engine already do that by default using frustum culling and occlusion culling, one render only the visible objects in camera and the other do the same but with the object that are not visible back to the visible objects.