Ok, thanks I changed the image sampler from adaptative dmc to fixed rate and it works.

Hi I have a strange error. Last night I was rendering and everything was ok, I wanted to save my work but I got a bugsplat, today I open the same model but older version without the last save I render the image and nothing just the Hdri image. When I override materials the render its ok, I checked if the textures are visible in the vray material editor and everything its ok, but still the render its not working. Somebody can help me?

Hello
I need some help for my render, the image is grainy I tried adding more subdivides, inreasing image sampler, threshold, subdivide ligth cache, but the image still grainy I hope You can help me. I attached the render and the vray settings.