Niagara System (GPUComputeSim) invisible in-game but work in viewport. CPUSim works fine

Development Asset Creation FX
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1

Hi everyone,

I’m encountering a persistent issue with Unreal Engine’s Niagara system and would appreciate any insight. Here’s the problem:

  • Unreal Engine Version: 5.5.4
  • Platform: Windows (Editor & Standalone)
  • Graphics API: DirectX 12
  • GPU: [RTX 2060]
  • Project Type: Blueprint
    Also I provide video of the issue, there you can see what I am talking about.

Has anyone encountered this specific issue where GPUComputeSim particles vanish only during gameplay but work in the viewport? What underlying causes should I investigate? Are there known engine bugs, project settings, or platform limitations related to GPU particle rendering in shipped games/PIE?

Any debugging suggestions, workarounds, or fixes would be greatly appreciated!

Thanks in advance.

2

Problem was in skeletal mesh location spawn type. There was not set a DefaultMesh. I fixed it, and it now works fine.