If we disable the fill, then the shadows are good.
Once we enable the fill, the it gets destroyed.

Our system:
Nvidia RTX 6000ADA
128GB RAM
AMD Ryzen 9 7950X

Aximmetry 2025.1

If we build our level further, we get these weird artifacts if we disable the fill.
If we enable the fill, it even gets worse.

What do you mean by “the fill”? 

We are doing a VP project on a LED wall.

So with the "fill" we mean the lower rendered part next to the frustrum.

If we disable it here, then it is better:

Hi,

The simplest fix is to set the Fill Quality to High:

Additionally, you might not be aiming your camera at the LED Wall, or the LED Wall might not be correctly positioned. This could be why the Frustum is not being displayed on the LED Wall. The Frustum is placed where your studio's camera sees, while the Fill is rendered only for lighting or reflections; the Fill is never directly seen and recorded by the camera.

Note that the LED Wall production type is quite complex. We have a detailed guide available here:  https://aximmetry.com/learn/virtual-production-workflow/led-wall-production/using-led-walls-for-virtual-production/ However, be aware that the document is slightly outdated. We are planning to release an updated and more detailed LED Wall documentation in the near future.

Warmest regards,