It’s solved all of my use-cases. UE5 modeling tools, especially early ones, are obviously not of the same caliber as dedicated content-creation software, but it’s been really useful to me.
And that depends! Lightmass is good for lower performance targets, and lumen can facilitate excellent dynamic quality. It’s all a matter of scalability and feature sets. Lumen can’t currently support colored shadows, which lightmass can, so it’s a feature trade-off.