Rhino 8 Section Tools Performance Concerns

Just upgraded to Rhino 8. Specifically because of he new Section Tools under the Drafting menu. I’m finding the performance to be remarkably slow. The models are not complex; stair designs with some fasteners.
Generating the section drawings and updating the section drawings are just slow.
Anyone else experiencing this?
I’m using an I7 with 32 gigs ram, Nvidia p2200.
I had no issues with Rhino 7 using clipping planes and Make2d. Performance there was fine.

Hi Wollastonbill,

Can you run SystemInfo via the Rhino command line and post the results?

Rhino 8 SR3 2024-1-9 (Rhino 8, 8.3.24009.15001, Git hash:master @ 3541fa287a013b0f17849f0740f1e43a44031bfc)
License type: Commercial, build 2024-01-09
License details: Cloud Zoo

Windows 10 (10.0.19045 SR0.0) or greater (Physical RAM: 32Gb)
.NET 7.0.0

Computer platform: DESKTOP

Standard graphics configuration.
Primary display and OpenGL: NVIDIA Quadro P2200 (NVidia) Memory: 5GB, Driver date: 3-10-2021 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 461.92
> Accelerated graphics device with 4 adapter port(s)
- Windows Main Display attached to adapter port #0

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: 4x
Mip Map Filtering: Linear
Anisotropic Filtering Mode: High

Vendor Name: NVIDIA Corporation
Render version: 4.6
Shading Language: 4.60 NVIDIA
Driver Date: 3-10-2021
Driver Version:
Maximum Texture size: 32768 x 32768
Z-Buffer depth: 24 bits
Maximum Viewport size: 32768 x 32768
Total Video Memory: 5 GB

Rhino plugins that do not ship with Rhino

Rhino plugins that ship with Rhino
C:\Program Files\Rhino 8\Plug-ins\Commands.rhp “Commands” 8.3.24009.15001
C:\Program Files\Rhino 8\Plug-ins\rdk.rhp “Renderer Development Kit”
C:\Program Files\Rhino 8\Plug-ins\RhinoBonusTools.rhp “Rhino Bonus Tools”
C:\Program Files\Rhino 8\Plug-ins\AnimationTools.rhp “AnimationTools”
C:\Program Files\Rhino 8\Plug-ins\RhinoRenderCycles.rhp “Rhino Render” 8.3.24009.15001
C:\Program Files\Rhino 8\Plug-ins\RhinoRender.rhp “Legacy Rhino Render”
C:\Program Files\Rhino 8\Plug-ins\rdk_etoui.rhp “RDK_EtoUI” 8.3.24009.15001
C:\Program Files\Rhino 8\Plug-ins\NamedSnapshots.rhp “Snapshots”
C:\Program Files\Rhino 8\Plug-ins\MeshCommands.rhp “MeshCommands” 8.3.24009.15001
C:\Program Files\Rhino 8\Plug-ins\RhinoCycles.rhp “RhinoCycles” 8.3.24009.15001
C:\Program Files\Rhino 8\Plug-ins\RhinoCode\RhinoCodePlugin.rhp “RhinoCodePlugin” 8.3.24009.15001
C:\Program Files\Rhino 8\Plug-ins\Toolbars\Toolbars.rhp “Toolbars” 8.3.24009.15001
C:\Program Files\Rhino 8\Plug-ins\3dxrhino.rhp “3Dconnexion 3D Mouse”
C:\Program Files\Rhino 8\Plug-ins\Displacement.rhp “Displacement”
C:\Program Files\Rhino 8\Plug-ins\SectionTools.rhp “SectionTools”

Let’s update your video driver. Do you have a small example file that we can look at? If need be upload privately and add a link to this post in the comments.

Just uploaded. I will try video drivers next. Thanks for your efforts.

Thanks, I’m assigning this to the dev to look at (later this week)

I do see a couple BadObjects, use the SelBadObjects command to highlight.

I’ve done some sluething of my own.
Sure seems like the Lag Bolts in the model were causing problems.
What was somewhat vexing is that clipping plane and make 2d in V7 had no issues while Section tolls in V8 did have trouble.
I think you can put this one to bed for now. I do appreciate all the availability of McNeel staff to help with stuff like this.

@wollastonbill Creating the background drawing of a section uses the same process as Make2D. You will see that Make2D takes about 34 seconds to update. I advise that you turn of the background of the drawing while you are modeling (there is an option in ClippingDrawings and EditClippingDrawings commands to set the AddBackground". You can turn back on when you need to print or export the drawings.