We had quite a few requests to do a breakdown on our terrain material on the fb groups “Unreal Engine 4 Developers Community” and “Ten thousand hours” so we crated a short blogpost doing just that.
The material has tessellation, height blended layers and puddles that respect to the underlying textures and can be painted in using a separate layer.
We are still using 4.12, this flag got removed with 4.13 I think so you should be fine without it
I added a annotation to the video, thanks for the feedback!
We are using 2k and 1k textures for this material. We found that reducing this to 1k or even 512 makes almost no difference under regular gameplay conditions (third person camera) but we like to give options for ultra graphic settings so we will probably leave them in the game.