Hello
Some time ago I posted about a problem.
in UE 5.1, lumen stopped work with nanite foliage models (trees). Frame rate always went to 0, but with path tracing all worked ok.
Now totally randomly I figured it out!
In my default scene, I have basically trees, a sky and a surface with grass. but also few lights. If a spotlight has a source radius different than 0, that kills lumen, if there is nanite foliage at the same time. If the source radius is 0, also lumen works fine with many many foliage nanite meshes. It looks totally absurd for me, but I wanted to report this bug.
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