Changing the Terrain culling focus from the active Camera to an arbitrary object

Hello! Let me cut to the chase: I have a third person camera system where the camera is the child of a pivot object, and my camera script rotates the pivot instead of the camera. Meaning that in practice, the camera not only rotates but also moves around the pivot object.

Here’s the problem: considering that camera rotation in my system also causes the camera to travel (and in my case it travels large distances, since it rotates around large objects), it causes Unity’s terrain system to update the culling of detail objects, causing severe stutter. This issue would be solved if I somehow changed the Terrain culling focus from the active camera to the pivot object that the camera is rotating around. Is this possible? Thank you a lot in advance!