Static Batching Unity Terrain Do not work

Unity Engine
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1

I Have an issue with static batching with Trees in terrain system. (I tick GameObject as Static)

So I test to just add my tree gameobject manually with and static batching tick and batches works !

But when i’m using unity terrain and paint my trees no saving batches.

I try different things like tick Draw Instance for terrain, tick Enable GPU instancing for Material.
But nothing changes.

I don’t understand why when i just place my gameobject this work perfectly but when i paint my tree i dont sae batches ?

Someone can help ?

Unity Version : 2022.3.9f1, I use URP-HighFidelity for rendering.

Example with Tree Gameobject manually place, See Saved by batch

9773430--1400856--savedbatches.jpg
9773430--1400856--savedbatches.jpg1820×841 221 KB

Example with Unity Terrain : (Saved by batch 0)

9773430--1400862--nobatches.jpg
9773430--1400862--nobatches.jpg1827×886 238 KB

2

Hey, I’ve got the same issue. For me, it seems related to LOD groups. The batching works fine, with or without an LOD group, when prefabs are placed individually; but when places as trees on terrain, I have to get rid of the LOD group for batching to work. Each LOD is using the same material & even mesh for testing.

Very frustrating!