Unreal Engine 5.7 Preview

[Ibtesam_Sadiq]

I am having few issues with OpenScene:
BUG: landscape spline actor was broken and had gaps in the lumen surface cache scene view and HWRT reflection view in 5.6. but in 5.7 HWRT looks good but in surface cache landscape spline is still broken. issue resolves when i disable nanite on the source mesh.

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I am having few issues with open scene: BUG: landscape spline actor breaks and have gaps in the lumen scene view while looks fine in lit mode geometry wise but lighting will be incorrect. I have Nanite enabled on the mesh that i am using in landscape spline actor. But issue resolves when i disable nanite on source mesh. [Screenshot 2025-09-15 185931]

And I also can’t see foliage other than grass type in Lumen view modes.
I am using the following CVARS:
r.RayTracing.Nanite.Mode=1;
r.RayTracing.Culling=0;
r.RayTracing.Geometry.InstancedStaticMesh.Culling=0;
r.RayTracing.Geometry.LandscapeGrass=1;