Here's a Megascans assembly pack that I built and set dressed the environment for the new 'Mega Assembly' workflow. I built and optimized the pipeline to be game ready and drag and drop ready into your game. With this method, you can easily build an environment like this in literal minutes.
For this pack I specifically built the pipeline, helped Jack Mckelvie create some of the diorama assemblies, optimized, set dressed each environment shot, and did all the lighting and post processing.
I worked closely with Jack Mckelvie, he built most of the assemblies for this pack. Please check out his work here: https://www.artstation.com/jackm