Thanks for getting back to me. Buildings are all a couple of meters high. My Texels are set to 20, if I go any higher, the bake usually crashes for my scene. I've just rebaked the light and it still all occurs. Attached the same view straight from the editor once unlit and once with scene lighting. You can clearly see that for example not all the fence meshes and the bush is not getting picked up. Another issue I have is that it seems bakery is maybe scrambling the lightmap UVs somehow? I have this house prefab that freshly dropped in the scene looks like this: After baking it turns out like this: You can clearly see the window shadows are all over the place.... what could cause this?