Weird Lighting Glitches

At around 00:03 second timestamp there’s a sudden visible change in lighting below the wooden structure at the middle.

This is a result of Movie Render Queue. No idea as to what might have happened. Could someone please help me here? I have seen this happening in other places too, those are subtle, but this looks way too much!

I just went through the lumen scene in the transition. There’s a significant transition in LOD in lumen scene. How do I fix this?

may be your lod 1 does not have enough space for light to pass

But I rendered the scene in LOD 0. So there’s no LOD 1 in this scene.

Just that, Lumen also works in LOD. I don’t know how to make that LOD0