Rhino 8 vs Rhino 7 Curve and Edge Smoothness


I’ve upgraded to Rhino 8 last week.

I’m working on a part I started in Rhino 7, and notice that in V8, Curve and edge definition/smoothness is not as good. It is very good in V7, but it is more blurry/unsharp in V8.
It happens in Shaded and in Wireframe as well.

I have the same OpenGL settings in both versions of Rhino.

It’s true I have a notification in the Properties/Layer/Notifications panel which recommends a driver update. Unfortunately, my graphics card gets no updates any more.
Nonetheless it works very well in V7 as I mentioned.

As you know, seen from a close distance, it can be quite uncomfortable to make small adjustments with close lines/curves/points looking blurry/pixelated, especially if these are off orthogonal.

Are there additional settings to check and adjust in order to improve this?

Graphics Card Specs:

NVIDIA Corporation
Quadro K3100M/PCIe/SSE2
OpenGL version: 4.6.0 NVIDIA 392.62
Render version: 4.6
Shading Language: 4.60 NVIDIA
Driver Date: 8-17-2020
Driver Version:

Maximum Texture size: 16384 x 16384
Z-Buffer depth: 24bits
Stencil depth: 8bits
Maximum Viewport size: 16384 x 16384
Total Video Memory: 4 GB

Thank you very much for your help!

It seems your Nvidia driver is from 2020. That’s ancient by Rhino standards. I would suggest updating to the current driver as a first step.

Hi -

We have an open item about how curves are drawn in Rhino 8:
RH-78744 Display: Curve drawing quality

Hello Wim,

Thank you very much for your reply and the information. It’s a relief to know this is alredy bein adressed.

Wish you all a good week!


Sorry for the writing mistakes. I wrote to fast.




Thank your suggestion.