(INCONCLUSIVE) Manual object culling distance

// CullingVolume.cs
volume.cullDistance = Mathf.Clamp(value, 1f, ObjectManager.OBJECT_REGIONS * Regions.REGION_SIZE);

// Regions.cs
public static readonly byte REGION_SIZE = 128;

// ObjectManagers.cs
public static readonly byte OBJECT_REGIONS = 2;

Inconclusive, this seems to only clamp the visual in-editor value to be clamped to 1 and 256

Sources: