Content Examples blueprint,No static mesh was used,How was it achieved?

Are you sure the room blueprint has done nothing?
because I see there’s a lot functions on the left side,they look very like something adding components on runtime.
the construct script called the redraw function.hmm…it’s suspicious,might be the sequence entry…what’s inside it?

I didn’t download the project.just to remind you ,in case you didn’t notice them. better to check them out.
hope it useful.