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Hi Marco -

Depending on the circumstances, that can either be normal or an issue that needs to be looked into.
We’d need your SystemInfo and a 3dm file to be able to say more.

Rhino 7 SR23 2022-10-9 (Rhino 7, 7.23.22282.13001, Git hash:master @ a931168ca9426920ae6aa97218710b662f17fc39)
License type: Commercial, build 2022-10-09
License details: Cloud Zoo

Windows 11 (10.0.22000 SR0.0) or greater (Physical RAM: 32Gb)

Computer platform: LAPTOP - Plugged in [100% battery remaining]

Hybrid graphics configuration.
Primary display: Intel(R) HD Graphics 530 (Intel) Memory: 1GB, Driver date: 11-16-2022 (M-D-Y).
> Integrated graphics device with 3 adapter port(s)
- Windows Main Display is laptop’s integrated screen or built-in port
- Secondary monitor attached to adapter port #1
Primary OpenGL: NVIDIA Quadro M1000M (NVidia) Memory: 2GB, Driver date: 10-20-2021 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 496.49
> Integrated accelerated graphics device (shares primary device ports)
- Video pass-through to primary display device

OpenGL Settings
Safe mode: Off
Use accelerated hardware modes: On
Redraw scene when viewports are exposed: On
Graphics level being used: OpenGL 4.6 (primary GPU’s maximum)

Anti-alias mode: 8x
Mip Map Filtering: Linear
Anisotropic Filtering Mode: High

Vendor Name: NVIDIA Corporation
Render version: 4.6
Shading Language: 4.60 NVIDIA
Driver Date: 10-20-2021
Driver Version:
Maximum Texture size: 16384 x 16384
Z-Buffer depth: 24 bits
Maximum Viewport size: 16384 x 16384
Total Video Memory: 2 GB

Rhino plugins that do not ship with Rhino

Rhino plugins that ship with Rhino
C:\Program Files\Rhino 7\Plug-ins\Commands.rhp “Commands” 7.23.22282.13001
C:\Program Files\Rhino 7\Plug-ins\rdk.rhp “Renderer Development Kit”
C:\Program Files\Rhino 7\Plug-ins\AnimationTools.rhp “AnimationTools”
C:\Program Files\Rhino 7\Plug-ins\RhinoRenderCycles.rhp “Rhino Render” 7.23.22282.13001
C:\Program Files\Rhino 7\Plug-ins\RhinoRender.rhp “Legacy Rhino Render”
C:\Program Files\Rhino 7\Plug-ins\rdk_etoui.rhp “RDK_EtoUI” 7.23.22282.13001
C:\Program Files\Rhino 7\Plug-ins\rdk_ui.rhp “Renderer Development Kit UI”
C:\Program Files\Rhino 7\Plug-ins\NamedSnapshots.rhp “Snapshots”
C:\Program Files\Rhino 7\Plug-ins\RhinoCycles.rhp “RhinoCycles” 7.23.22282.13001
C:\Program Files\Rhino 7\Plug-ins\Toolbars\Toolbars.rhp “Toolbars” 7.23.22282.13001
C:\Program Files\Rhino 7\Plug-ins\3dxrhino.rhp “3Dconnexion 3D Mouse”

You can download a sample file form here.

Hi Wim.

Are you able to take a look on that?
I do not really keep the time, but I think more than 10 minutes.


Hi Marco -

Thanks for that file - yes we took a look at that on different machines.
With a model like that, a “long” time is to be expected. How fast that model will mesh depends very much on (1) the mesh settings in the file, and (2) the CPU in your machine.

We used machines with a dual Xeon, an i9 on Windows, an i9 on macOS, a Ryzen 7, and an i7 on Windows, and the times to create the display mesh varied between 22 seconds on the Mac, and 9,5 minutes on the i7. When changing the mesh setting to result in 3.1 M triangles doubles the time it needs.

Please verify you that you are using the NVIDIA card.
Note that we recommend 4gb per monitor and the latest video nvidia drivers as well.

@Marco_Romagnoli Wim already provided you some numbers with that file. I’ve done a few tests and with these mesh settings I get a pretty decent looking mesh. Oddly on Mac it takes only about 10 seconds, whereas on my Windows machine it takes 3min40 still.

This is not the biggest file I manage.

I know, this is not a beast machine, but, in office we have other pc, the difference can be described in orgder of 10/15%, not more.

I also do not really think that is question of GPU.
During the mesh generation both gpu and cpu does not work at 100%. That I think is the problem.
And… why in a mac we got 22 second, and on win we have min 9 minutes?
I think the installation base of rhino is for most of the part win!!!

Thank you


Thanks for checking, more of a house keeping item than an attempt at resolution.

The honest answer is we don’t know (yet) but our dev said the code for meshing is the same. So it might be something that is better handled on the Mac.

I think is an important thing, almost for me.
I’m sorry I kept silent all this time. I hope for a solution.


Hi Marco -

It’s unlikely that we can do anything about this. Managing resources is in the hands of the operating system.

I do not know how.
But, more less all the other cad packages done in other way, a faster way.
Here another project 20 minutes and counting.

You can imagine that is not possibile to work with this kind of time.


Can you give some comparison examples that I can share with our dev?
In SolidWorks (although it took a long time to open the file) when I change the mesh to a pretty high setting, it shades in about 30 seconds

Fusion 360
Upload the file, open, convert, shading, is less than 10 minutes


less than 10 minutes, could still mean the same speed in this case, in Rhino you got 9 minutes, right?
I’m just interested in the shading times, so how long does it take to generate the meshes?
You mentioned

so I wonder, which others than Fusion360 did you test?

In less than 10 minutes fusion 360 upload to the cloud convert from .3dm and render.
I’m not able to check only the render phases.

This one stop hi count at 45minutes. Every modification we mede at the solids will take this time to render.
I think we are talking about “aria fritta” this is for sure something that need to be improved if possible. If not It is impossible to work with a model like that.

Thank you.


Hi @Marco_Romagnoli ,

It might be that there is a bug, but this is far from sure. I would say that even 10 minutes is still too slow if you want to shade your changes every time. As shown, for some reason, on the Mac, shading goes a magnitude faster. The model you sent was even faster on an M1 mac. (15 seconds). If this is the work I would need to do daily, I would seriously consider that option.
FYI: I did other shading tests on models, where the time to shade was negligible between Windows and Mac.
Out of curiosity: what kind of edits do you need to make to these files? It might be that using a slightly different workflow can ease your pain. E.g. splitting up the model temporarily until all edits are made.


We create this file in rhino!!!
We already do some kind of workaround to bypass this issue. But you can understand that is annoying.
I’d like to transfer to Mac. But our current workflow involve lot of programs that run only on PC.
Is from long time for sure probably that is the reason why nobody ask for a bug.
Locking for any possible improvement in this way.

Have a nice weekend.


@Marco_Romagnoli For example, since your model is symmetric:

This shades in 7 seconds with these settings:

Not the prettiest mesh but depending on your needs it might do the job