Is Lumen more performance heavy than old dynamic lightning or less?

There are several points in the story with tons of skeletal meshes.
Regardless; your outburst about a specific game inplemented by a less than decent company is hardly a metric to be used to gage the viability of an engine.

In fact, its very much akeen to you blaming your pencil over your misspellings.

All in all, it’s about as puzzling as you not knowing what LTS means and dealing in software…