For a very large Stage, the radius of the SkySphere of the Sky in the Environment is not enough

I am now validating the full-scale city data as a digital twin.

I put the city data, which is about 32 km in size, into Omniverse Create (it works very comfortably!), when I assigned Sky in Envieonment, I could see black areas.

I checked Sky and it seems that SkySphere is not large enough.

In this example, each map is placed in a strict position and cannot be shifted along the origin.
I want to erase this black area.
Is it a problem just to hide SkySphere?
Or is it better to scale SkySphere?

Verification environment

  • Windows 10
  • Omniverse Create 2022.1.2