@Beautiful Misfits: you don't really need a monster PC. The background trees and all people are in fact billboards (a rectangle with a picture on it and an opacity map to remove the outline) and you can reduce the memory for all the props by reducing the size of the texturing maps. The tricky part is to get consistent shadows for the billboards and avoidind them looking 'flat', and keener succeeded in doing something very clean!

Nice composition, btw!

Thanks, that make sense

Bisonravi, Thank you for explaining billboards. However not all are billboards. As I recall there is at least 3 or 4 full figures
that are in the scene. I'll have to reopen the scene to refresh my memory on the details.

The fact we can't differentiate true 3D characters and billboards is a proof that the scene is well done !