Is there anyway set a renderer not visible in OnWillRenderObject/OnPreRender fast?

I know a renderer have passed frustum cull and visible after OnWillRenderObject.
I want do some occullsion cull.
Now I use renderer.enable = false in OnPreRender and renderer.enable = true in OnPostRender to set occludeed renderer not visible,but after some test, set many renderer's enable opertation cost even more than occullsion cull cost.
Is there any way to tell Unity not render this renderer fast in this point?

 

Have you tried to set the GameObject.layer to a value that does not get drawn by the Camera?
https://docs.unity3d.com/ScriptReference/GameObject-layer.html

Not sure if it yields better performance though.

Any reason you don't use the built-in Occlusion Culling system?
https://docs.unity3d.com/Manual/OcclusionCulling.html

 

The layer system won't work since that's handled during the culling. The built in occlusion system, or using an CullingGroup is generally the way to go here.
https://docs.unity3d.com/ScriptReference/CullingGroup.html

The other way to go about it is to not use the built in renderer components at all, or at least leave them disabled, and use DrawMesh / DrawRenderer commands with a command buffer to draw objects when wanted.