Thanks for posting this Kadri. Per the notes this whole animation took about 10 minutes rendered at 4k, and he did it on on a i7 3770 (4 year old CPU) with only 16 gigs of ram. The only 'high-end' hardware was the GTX 980ti video card (as you might expect for a GPU renderer). I've started messing around with UE and Speedtree, even though it's pretty much 'baby-steps', there's an amazing world of potential to create natural scenery. Now if I could just push the "Export scene to UE" button from Terragen"!