Rhino 7 for Mac running slow... tips please

Rhino is running so slowly now and even small files are struggling to open quickly, can anyone offer any tips to speed things up? I even have files that don’t open any more. e.g. deleted out some materials on a 26MB file took 5 mins… I’m pulling my hair out. Is there a cache needs emptying? I’m not running any other programs. Thank you

Running Rhino 7 (7.22) on Monterey 12.6, 2.4 GHz 8-Core Intel Core i9, 64 GB 2667 MHz DDR4, AMD Radeon Pro 5500M 8 GB & Intel UHD Graphics 630 1536 MB

Hi Alasdair -
Please run the Rhino SystemInfo command and copy-paste the result here.

Hello, can someone still help, having same issues despite moving to Windows on new computer. Here’s the system info:

Rhino 7 SR25 2022-11-22 (Rhino 7, 7.25.22326.19001, Git hash:master @ 2a680490f96a04550d1f39158b859c4f7739d024)
License type: Commercial, build 2022-11-22
License details: Cloud Zoo

Windows 11 (10.0.22621 SR0.0) or greater (Physical RAM: 64Gb)

Computer platform: DESKTOP

Standard graphics configuration.
Primary display and OpenGL: NVIDIA GeForce RTX 4090 (NVidia) Memory: 24GB, Driver date: 11-13-2022 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 526.98
> Accelerated graphics device with 4 adapter port(s)
- Windows Main Display attached to adapter port #0
- Secondary monitor attached to adapter port #1

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: 11-13-2022
Driver Version:
Maximum Texture size: 32768 x 32768
Z-Buffer depth: 24 bits
Maximum Viewport size: 32768 x 32768
Total Video Memory: 24564 MB

Rhino plugins that do not ship with Rhino

Rhino plugins that ship with Rhino
C:\Program Files\Rhino 7\Plug-ins\Commands.rhp “Commands” 7.25.22326.19001
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” 7.25.22326.19001
C:\Program Files\Rhino 7\Plug-ins\RhinoRender.rhp “Legacy Rhino Render”
C:\Program Files\Rhino 7\Plug-ins\rdk_etoui.rhp “RDK_EtoUI” 7.25.22326.19001
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” 7.25.22326.19001
C:\Program Files\Rhino 7\Plug-ins\Toolbars\Toolbars.rhp “Toolbars” 7.25.22326.19001
C:\Program Files\Rhino 7\Plug-ins\3dxrhino.rhp “3Dconnexion 3D Mouse”
C:\Program Files\Rhino 7\Plug-ins\Displacement.rhp “Displacement”

It is particularily bad when copy/paste or undo/redo

Hi Alasdair -

Are your files saved locally on your machine or are they on a server or in some synchronized folder?

Hi Wim, They are saved locally.

Alasdairjmckay, Is this happening in a new file? or just an existing project?

That is the workaround I’m using now. I’m working on an individual building in it’s own separate file and then importing it to another file showing the buildings in that block. It appears to be working okay then but I’ve had this for months now, I’m guessing it’s something in the model…? If so what would be the likely culprits?

If this is model specific can you zip and send us the file to look at, please mention this thread in the upload comments. Thanks

send privately to mcneel

Ah, unfortunately not… NDA’s, sorry. Are there any things I can look at?

Can you provide more detail on what you’ve got going here?

Apologies, what kind of detail… file size 371MB, Mesh building imports so mostly simple geometry apart from mouldings, simple materials though I have ended up with a lot of duplicates. I am dealing with imports from colleagues in sketchup, could that indicate something?

Yes, that raises a few red flags.

Can you run SelBadObjects?

How many individual objects? lots of objects (especially far from origin) can be problematic when the view generates, even if inside a block.

Nothings too far from origin… what is too far from origin? Origin is at centre of model, furthest point away, 350ft

Bad objects are 1 surface and 125 meshes. Is that a lot? I’m assuming I delete and see how it handles as we then know that is the problem?

350ft, not a problem, miles away…

Yes, delete or rebuild the bad objects.

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Thank you, will give that a go once I have a minute