Render with GPU more blurry than with CPU

Extending SketchUp V-Ray for SketchUp
1

Hello i notice something weird with cpu vs GPU rendering.
I used the CPU with Catmull-rom AA filter for my render and recently i switched to GPU ( even RTX) and i noticed the render are more blurry.
Anyone notice that before or have a solution for a crisp render with GPU?
i joined 2 picture to show you. First is CPU rendering and other is GPU.
Thanks

2023_AO_pLagny_V2_cam01
2023_AO_pLagny_V2_cam012133×1200 759 KB

test_GPU
test_GPU2133×1200 486 KB

2

Try this:

1 Like
3

thanks but it didnt work. i kind find out while fiddling with setting.
I unchecked the AA Filter and it seems to work for me
So no AA Filter with GPU (Cuda) render is sharper… weird

4

Antialiasing works by blurring edge pixels in your image, so I am not very surprised. It looks like the AA in your GPU has a different radius. Are you using Denoiser?

5

Yes i’m using Nvidia AI denoiser. Is there a place where i can adjust the radius you’re talking about?
If not juste removing the AAfilter seem to do the job.
thanks

6

If you have an RTX gpu you could use Vray’s RTX api to render a lot faster than with CUDA.

7

I have a RTX card but for me the speed difference is not that great. My models are small, though.

8

I haven’t used Vray in a while, but on blender I have the option of rendering with CUDA or OptiX, which is the api that uses Nvidia’s ray tracing cores, and for example a render that takes 5 mins using CUDA it takes 1 using OptiX, maybe Vray’s RTX isn’t as well optimized as cycles OptiX