It use CPU insteade of GPU to render

[bibidentuhanoi]

So I'm playing around and testing the addon, and I found out that it does not use a GPU to render. Whether I change the Blender setting to a GPU or set the device in the Cycles settings to a GPU, it always ends up using the CPU to render. I also tested the blender's traditional bake option and it used GPU.

Is this a bug? or am I missing smth? Thanks 

[Naxela]

That's strange and does sound to be a bug. It did use the GPU in earlier versions, but I'll have to check again. - By the way, how are you checking GPU usage, since some parts of the Windows task manager doesn't report this correctly.

Also could you check if it shows differently when rendering an ordinary GPU render? (just an image without using the lightmapper)

[bibidentuhanoi]

i check it with msi afterburner

the GPU1 is my GTX1650 ti and GPU2 is my intel i7 intergrated card

this image is ordinary GPU baked:
it used 64% to 95% of GPU while keeping the CPU at 22%

this one is The Lightmapper:
The lightmapper used 1% to 50% of GPU and CPU stayed at 98% all the time

so after testing with afterburner, I notice that Lightmapper uses CPU and GPU at the same time but it uses more CPU than GPU
The ordinary gpu render is much faster

[Naxela]

That seems strange, I'll have to investigate. In my case, I get full CUDA compute utilization when I use the GPU setting + noticeable speed increases between CPU to GPU setting. I can't speak for MSI Afterburner, but Windows does report full usage in my case:

Works for both RTX 3070 and Quadro K4000. There shouldn't be much difference between these and your 1650 ti. I'll test on a 1060 when I get home.