Question about GPU Lightmass performance

Hi, I just using GPU lightmap for baking lighting in unreal 4.27 , as you can see, when I build the lighting data, the cpu is using at 50% and gpu did not work at full at all. So can you tell me does it normal or bug ?
btw : this level are large with multiple big volumetric important volume.
Thanks.

Hi,

Have you try to scale down your Factors in the GPU Lightmass Setting ?

yes, I changed that factor too, but the result is still the same.

Then, to troubleshoot the issue, I would recommend to try on a smaller scale scene with the same settings.

I am guessing that the issue is the multiple big scale Volumetric Importance Volume in your case. But can’t help further, I never work with it on a big scale environment, neither do I know any case where it was used.

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