How do I cover a whole hill with grass without using much memory

Technical Support Particles and Physics Simulations
1

The grass you see in front is good to see but not good for my pc when I cover the whole hill behind with it (it would take more than 32gb of ram for that). So I need a more simple version of grass for use, or at least to fake it.

test1
test12030×1450 1.79 MB

2

Know your LOD (Level Of Detail) and apply the skill as you please.

Here’s some material to get you walking:

  1. What is LOD?
    http://wiki.polycount.com/wiki/LOD

  2. Is it possible to have automatic LOD (level of detail) on large scenes?

  1. https://blendermarket.com/products/level-of-detail-manager

  2. Google “Level Of Detail blender”

… and for far away objects you can simply use billboards aka images (w/ alpha - while at it also learn about Texel density)