gpu useg while rendering

[Jiri.Matys]

Hi,

I have a problem with GPU rendering (again).
I got this problem previously in one of my scene when I dont have enough RAM and VRAM so GPU rendering was terribly slow. With compresed textures it was better.

But now. I have used 64 from my 128 GB RAM and around 18 GB from 24 GB VRAM and GPU usage looks like that.

Why?

[oglu]

Use GPUz to monitor your GPU. Windows does a bad job in that case.

[Jiri.Matys]

I use HWInfo and it is maybe even worse.. Definitelly GPU useg is not good for some reason.

[oglu]

That depends on the scene. Some scenes have a different bottle neck.
Test the Vray GPU benchmark.

[francomanko]

are you using render elements, because that can slow down the gpu.

[Jiri.Matys]

No, I dont use render element.