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.