Correction. Epic said there was no manually created LoDs. There was still LoD, it's just that the engine itself handles it seamlessly and on the fly. I'm sure Epic developed some new algorithms that calculate LoD based on camera angle and distance. This is directly from Epic's website concerning nanites: Source LoD is here to stay, although annoying things like pop in (which is really symptomatic of an engine that has inefficient memory usage) should blessedly disappear with UE5.