GPU hitting 100% usage on a small file.

[Sunny2918878801lu]

I was texturing a lowpoly scene, the substance file after texturing is around 1.5gbs. The thing is, the scene keeps lagging and susbstance painter is very slow when i am painting any more details or doing any change. I found out when i am doing anything the GPU hits 100% usage. I am working on base color channel and not even on "material channel". Even when I am turning a layer off the gpu hits 100% ram stays on 8-10gb and cpu reachers 10-15%max. 

I have clean reinstalled the drivers, downgraded and upgraded drivers and even updated my windows, reinstalled my substance painter but the probelm is same even on PC better than mine.

link to file:

https://drive.google.com/file/d/1EeZotfTwo6zZQMOiAzEaNJ20JwS9T54e/view?usp=share_link

system specs: 

Ryzen 9 7950x

rx6950xt GPU

64gbs RAM

[Cyril Dellenbach · Accepted solution]

Hello @Sunny2918878801lu,

Thanks for the message and all the details.

Substance 3D Painter's engine has issues with too many layers and strokes for not enough triangles. Unfortunately, this is exactly the composition of your project. The floor isn't subdivided and has many strokes on it, causing lagging. Therefore, you'll need to subdivided the plane floor to have a bit more polygons.

I know this is a bothering issue, but if you want to keep your model as low poly as possible, I'd advise you to work on a secondary mesh with the same UVs, but more high poly and to apply the exported bitmaps on your low poly model.

Best regards,

[Sunny2918878801lu]

Big Thanks, this was somthing that was obviously out of my knowledge, not only this fixed the issue I also learned something about the software I am working on!