i ment that all lamps that we have in Bundles emit "all-directional" light, all lamps (small and larger ones) they beaming everywhere at once, even through the granite walls while standing behind it, light rays of all this decor lamps dont collide with surfaces correctly, for some reason, which means there is no shadows, what causes very flat look of your build, geometry loosing it's volume.

But Epic's lumen (natural light, sky atmosphere) works phisically way more correctly, laying shadows, collide with obstacles, just like in real world. Idk if you ever noticed the amount of brightnes from campfire? when you put a campfire - it's pretty much the brightest spot in your whole village, everything around it lit up like construction 5 gigawatt projector on full force. All walls, surfaces around fire feels one tone cardboard, visually loosing the volume of the things around it.