LOD
参考：
Use Decimate modifier as a realtime LOD generator – Blender Stack Exchange
Is it possible to have automatic LOD (level of detail) on large scenes? – Blender Stack Exchange
Dedicated tools for automatic LOD creation | Right-Click Select (Blender.Community)
Level Of Detail Manager
参考：
Level Of Detail Manager | Blender Market
カメラからの距離や視野角に応じてモデルを変化させる Level Of Detail Manager | プチ 3DCG モデラーの毎日モデリング (archive)
Lodify
動画：
Lodify – Free LOD addon for Blender 2.80+
参考：
DB3D/Lodify: LOD + Proxy system – GitHub
Level of Detail Addon | Blender Developer Talk
Proxify
LOD モデルを生成する機能あり
**DEPRECATED**
※「Lodify 」の使用を推奨
参考：
Proxify – a Proxy system for Blender | Blender Artists Community
Scatter
動画：
Photorealistic Grass in Blender Using the Scatter Addon
参考：
Scatter | Blender Artists Community