FREE Performance Optimization / Draw Call Reducer (HLOD) | Unity Tutorial @LlamAcademy
FREE Performance Optimization / Draw Call Reducer (HLOD) | Unity Tutorial  @LlamAcademy
Uploaded February 2023 | Updated September 2026, 1 hour ago
Learn how to optimize the performance of your game by automatically combining meshes, significantly reducing draw calls using the free HLOD tool from Unity. Hierarchical Level of Detail is a great tool to boost the FPS of your game, especially when you have large view distances with complex geometry!

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๐Ÿ“š Resources:
๐ŸŸ  HLOD Specification (Unity): docs.google.com/document/d/1OPYDNpwGFpkBorZ3GCpL9Z4ck-6qRRD1tzelUQ0UvFc/edit
๐ŸŸ  HLOD User Guide: docs.google.com/document/d/18HgBIr8oJweKaXtsIHZlh0s5HuXvQVmVfVcMPHAYS1A/edit
๐ŸŸ  Unity AutoLOD: github.com/Unity-Technologies/AutoLOD
๐ŸŸ  My Auto LOD Tutorial: youtu.be/EqVig88ZC_M
๐ŸŸ  Unity Mesh Simplifier: github.com/Whinarn/UnityMeshSimplifier
๐ŸŸ  Astrofish Asset Used: assetstore.unity.com/packages/3d/environments/fantasy/poly-style-medieval-village-159363?aid=1101l9QvC

Some links may be affiliate links, which at no additional cost to you, gives me a small portion of the purchase.

Chapters:
00:00 Topic Introduction & The Problem
00:45 What is HLOD?
01:56 Demo Scene
02:30 Get HLOD
02:50 Applying HLOD to the Scene & Configuration Overview
06:40 Demo 1 - Performance, Debug Visualizer, and What HLOD is doing
08:31 HLOD Subtrees
09:15 Reducing Chunk Size - More Granular LOD Swapping
10:00 Default LOD Controller - Runtime HLOD Controller
10:30 Side by Side Demo, a Weird Issue, Closing Thoughts, & Support LlamAcademy
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FREE Performance Optimization / Draw Call Reducer (HLOD) | Unity Tutorial

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