Hi,
A colleague and I seem to be having a recurrence of the slow copy/paste issue that was raised as part of RH-84516 on the Mac release that has since been registered as fixed.
My colleague and I are running Rhino (Windows) SR28 & SR32 respectively.
In my instance, copy/paste seems to be fast on the first instance (although not guaranteed), and then subsequent copy/pastes are very slow (measurable seconds) regardless of the complexity of the element. My colleague has had a similar experience. The issue occurs regardless of the number of instances of Rhino running: my colleague is running a single instance, I am running 8 instances, including a local hops/rhino.compute instance that is currently idling. A restart of Rhino is not guaranteed to fix the issue.
I am also running VisualARQ v3.10, and my colleague has v3.9 installed (in read-only mode). Neither of us are utilising VisualARQ elements in the workflows in question.
I’ve stripped the file my colleague was using of sensitive data and attached it to this post.
Let me know if you need anything else.
SysInfo for PC running SR32:
Rhino 8 SR32 2026-6-9 (Rhino 8, 8.32.26160.13001, Git hash:master @ 2804b73b0f4b4feba10cb8b0b07c18fce290de93)
License type: Commercial, build 2026-06-09
License details: Cloud Zoo
Windows 11 (10.0.26200 SR0.0) or greater (Physical RAM: 64GB)
.NET 8.0.22
Computer platform: DESKTOP
Standard graphics configuration.
Primary display and OpenGL: NVIDIA GeForce RTX 3060 (NVidia) Memory: 12GB, Driver date: 4-23-2026 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 596.36
> 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
GPU Tessellation is: 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: 4-23-2026
Driver Version: 32.0.15.9636
Maximum Texture size: 32768 x 32768
Z-Buffer depth: 24 bits
Maximum Viewport size: 32768 x 32768
Total Video Memory: 12 GB
Rhino plugins that do not ship with Rhino
C:\Program Files\McNeel\Rhinoceros\8.0\Plug-ins\D5LiveSync (e0d5e210-02f6-4ee9-a2b0-1675e225d958)\D5Conv.rhp "D5 Live Sync for Rhino"
C:\ProgramData\McNeel\Rhinoceros\8.0\Plug-ins\Datasmith Rhino Exporter (d1fdc795-b334-4933-b680-088119cdc6bb)\DatasmithRhino8.rhp "Datasmith Exporter" 5.5.4.0
C:\Program Files\Rhino 8\Plug-ins\Tibidabo\VisualARQ.rhp "VisualARQ"
C:\Program Files\Rhino 8\Plug-ins\Tibidabo\Tibidabo.rhp "Tibidabo"
C:\Users\XXXX\AppData\Roaming\McNeel\Rhinoceros\packages\8.0\Bullant\26.5.21.8\bullant.rhp "bullant" 26.5.21.8
C:\ProgramData\McNeel\Rhinoceros\packages\8.0\LadybugTools\1.38.257\Ladybug.RH.Loader.rhp "Ladybug.RH.Loader" 1.38.257.0
Rhino plugins that ship with Rhino
C:\Program Files\Rhino 8\Plug-ins\Commands.rhp "Commands" 8.32.26160.13001
C:\Program Files\Rhino 8\Plug-ins\WebBrowser.rhp "WebBrowser"
C:\Program Files\Rhino 8\Plug-ins\rdk.rhp "Renderer Development Kit"
C:\Program Files\Rhino 8\Plug-ins\RhinoScript.rhp "RhinoScript"
C:\Program Files\Rhino 8\Plug-ins\AnimationTools.rhp "AnimationTools"
C:\Program Files\Rhino 8\Plug-ins\IdleProcessor.rhp "IdleProcessor"
C:\Program Files\Rhino 8\Plug-ins\RhinoRenderCycles.rhp "Rhino Render" 8.32.26160.13001
C:\Program Files\Rhino 8\Plug-ins\RhinoRender.rhp "Legacy Rhino Render"
C:\Program Files\Rhino 8\Plug-ins\rdk_etoui.rhp "RDK_EtoUI" 8.32.26160.13001
C:\Program Files\Rhino 8\Plug-ins\NamedSnapshots.rhp "Snapshots"
C:\Program Files\Rhino 8\Plug-ins\MeshCommands.rhp "MeshCommands" 8.32.26160.13001
C:\Program Files\Rhino 8\Plug-ins\IronPython\RhinoDLR_Python.rhp "IronPython" 8.32.26160.13001
C:\Program Files\Rhino 8\Plug-ins\RhinoCycles.rhp "RhinoCycles" 8.32.26160.13001
C:\Program Files\Rhino 8\Plug-ins\Grasshopper\GrasshopperPlugin.rhp "Grasshopper" 8.32.26160.13001
C:\Program Files\Rhino 8\Plug-ins\RhinoCode\RhinoCodePlugin.rhp "RhinoCodePlugin" 8.32.26160.13001
C:\Program Files\Rhino 8\Plug-ins\Toolbars\Toolbars.rhp "Toolbars" 8.32.26160.13001
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"
SysInfo for PC running SR28:
Rhino 8 SR28 2026-2-10 (Rhino 8, 8.28.26041.11001, Git hash:master @ b7874a05a6982d0419fcc4f6009b510b48a09cb3)
License type: Commercial, build 2026-02-10
License details: Cloud Zoo
Windows 11 (10.0.26200 SR0.0) or greater (Physical RAM: 64GB)
.NET 8.0.22
Computer platform: DESKTOP
Standard graphics configuration.
Primary display and OpenGL: NVIDIA GeForce RTX 3060 (NVidia) Memory: 12GB, Driver date: 10-9-2025 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 581.57
> Accelerated graphics device with 4 adapter port(s)
- Secondary monitor attached to adapter port #0
- Windows Main Display attached to adapter port #1
OpenGL Settings
Safe mode: Off
Use accelerated hardware modes: On
GPU Tessellation is: 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: 10-9-2025
Driver Version: 32.0.15.8157
Maximum Texture size: 32768 x 32768
Z-Buffer depth: 24 bits
Maximum Viewport size: 32768 x 32768
Total Video Memory: 12 GB
Rhino plugins that do not ship with Rhino
C:\Program Files\Rhino 8\Plug-ins\Tibidabo\VisualARQ.rhp "VisualARQ"
C:\Program Files\Rhino 8\Plug-ins\Tibidabo\Tibidabo.rhp "Tibidabo"
Rhino plugins that ship with Rhino
C:\Program Files\Rhino 8\Plug-ins\Commands.rhp "Commands" 8.28.26041.11001
C:\Program Files\Rhino 8\Plug-ins\WebBrowser.rhp "WebBrowser"
C:\Program Files\Rhino 8\Plug-ins\rdk.rhp "Renderer Development Kit"
C:\Program Files\Rhino 8\Plug-ins\RhinoScript.rhp "RhinoScript"
C:\Program Files\Rhino 8\Plug-ins\AnimationTools.rhp "AnimationTools"
C:\Program Files\Rhino 8\Plug-ins\IdleProcessor.rhp "IdleProcessor"
C:\Program Files\Rhino 8\Plug-ins\RhinoRenderCycles.rhp "Rhino Render" 8.28.26041.11001
C:\Program Files\Rhino 8\Plug-ins\RhinoRender.rhp "Legacy Rhino Render"
C:\Program Files\Rhino 8\Plug-ins\rdk_etoui.rhp "RDK_EtoUI" 8.28.26041.11001
C:\Program Files\Rhino 8\Plug-ins\NamedSnapshots.rhp "Snapshots"
C:\Program Files\Rhino 8\Plug-ins\MeshCommands.rhp "MeshCommands" 8.28.26041.11001
C:\Program Files\Rhino 8\Plug-ins\RhinoCycles.rhp "RhinoCycles" 8.28.26041.11001
C:\Program Files\Rhino 8\Plug-ins\Toolbars\Toolbars.rhp "Toolbars" 8.28.26041.11001
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"
260630 Copying issue.3dm (761.3 KB)
EDIT: 01/07/26 - Day 2, and neither of us seem be having issues at present. I’ll be honest, not sure what caused it, and why its not occurring today (so far).