How can I solve the shadow change / culling happening here

Development Rendering
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1

Hello, I have this render Culling issues - Google Drive

I have created a PCG and when I zoom out the grass disappears / the looks change, I think it is a culling issue, so I double-checked if the Geometry had LOD0 and it has.

I have games override on, because I thought it is a culling issue, so I added the console variables

r.Raytracing.Geometry.InstancedStaticMeshes.Culling 0
r.forceLOD 0
foliage.forceLOD 0
raytracing.culling 0

and I have the AA at 1X16

But that section still changes when zooming out.

Can anyone shine some light on how to fix this?

After
After1920×1080 440 KB

Before
Before1920×1080 441 KB

2

Because of the way the shilouette of the hillside changes, I think that might actually be a foliage issue? It looks like some grasses on the hillside might themselves be spawning out, although it’s strange they’re despawning as one solid collection instead of individually. If you input the scene into the path-tracer, what does it give you?