Bug Terrain in URP, HDRP — Crash when adding details

Hi there. I am working on some terrain in a project of mine, and I'm using some of Unity's grass model assets. Every time I paint in grass detail meshes (not billboards, specifically detail meshes), I get a crash. The only way I can avoid this is by slowly single-clicking with a small brush, but this is tedious, and I want to cover a large area quickly. I've tried this on terrain in both URP and HDRP. What can I do?

 

Having this same issue come up all the time. Adding large amounts of details at the same time always causes a crash.

 

This bug is really easy to reproduce as well.

 

Do you guys have GPU instancing ticked while assigning the grass ...do u have a weak GPU??? If yes then try disabling GPU instancing

 

Did you file a bug report?

 

I did.

 

The crash also occurs when increasing the density setting in the detail tab of the terrain.

 

Pretty sure GPU instancing is not able to be changed in HDRP. Like I think with details it’s automatically set to off (?) so I’m still not sure what’s happening.

I’m not even using grass in my terrain anymore, working on an apocalypse game now… but in the future I hope I’m able to get such a seemingly simple feature to work.

 

I had the same issue Built-in pipeline. I solved for my project:
I disabled the terrains and just worked on one terrain element at once.

 

Great tip! I was just having this issue, with a central terrain containing the level, and some neighbouring terrains just for visual filler. I disabled the neighbours and now I can paint details again! Thanks.

 

I also had the same issue, Syco's tip helped a bit, but activating and deactivating terrains was tedious. Even better solution is import Terrain Tools unity package(plus it has useful features as well). No crashing even with 10+ active terrains and huge placement of details
link: https://docs.unity3d.com/Packages/com.unity.terrain-tools@5.1/manual/index.html

 

Running into this issue 2023.1.5f1

 

Untick "Affected by density scale" in the adding menu.

 

Yeah using terrain tools fixed it for me, im on 2022.3.10f1

 

Disabling neighboring terrains and keeping the one I'm working on enabled stopped the crashing and I am able to paint grass details again, thanks!