That looks really good! Great work.
We worked on an outdoor project our self lately and had some issues with foliage performance and so on…
How did you create the really dense, small grass around the pool/house?
Could you show some single asset-shots of the foliage actors you used there?
Is that part of the grass statically lit or dynamically as the rest of your scene?
Do you use any kind of LOD/Distance-Cull?