UE4 has been at the forefront of real-time archviz for the past few years. Now, Unreal Engine 5 ( UE5 ) is out and it contains a new render engine called Lumen which allows for Global Illumiatnion without baking light maps.
This is huge. No need to mess with lightmap UVs, no need to bake the lightmaps? I can't belive it, but it's true. Check it out for yourself.