Volumetric Shadows issue after certain scale

Hello everyone,

I have a problem with volumetric shadows of a directional light at a certain scale.
A volume with a height of 75m x 75m x 300m it looks like this:

So everything looks like it should be.

If the Size of the volume increases this happens:

150m x 150m x 600m

225m x 225m x 900m

300m x 300m x 1200m

And at the target scale this happens 750m x 750m x 3000m

I don’t have this issue with other light types (in this case a spot light):

The Volume is generated in Houdini and it doesn’t make a difference if the volume is scaled up in houdini or in unreal engine.

Anyone knows if there is a “Volumetric Shadow Trace Distance” parameter that needs to be changed for the directional light or something?

Cheers,
Chrizzo