Layer panel slow in Rhino 8

On Rhino 8 the layer panel is responding slow for files with extensive layer structures. It will take some seconds before a layer is created and often I end up creating a couple of layers by accident. Also selecting or renaming a layer has a significant delay.

The same file in Rhino 6 has no problems.


Rhino 8 SR5 2024-2-20 (Rhino 8, 8.5.24051.15001, Git hash:master @ 8ad7c99e58df0a8c09e572ba1ae2b52a6f429060)
License type: Commercial, build 2024-02-20
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 GeForce RTX 2070 (NVidia) Memory: 8GB, Driver date: 2-7-2024 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 551.52
> 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: 8x
Mip Map Filtering: Linear
Anisotropic Filtering Mode: High

Vendor Name: NVIDIA Corporation
Render version: 4.6
Shading Language: 4.60 NVIDIA
Driver Date: 2-7-2024
Driver Version:
Maximum Texture size: 32768 x 32768
Z-Buffer depth: 24 bits
Maximum Viewport size: 32768 x 32768
Total Video Memory: 8 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” 8.5.24051.15001
C:\Program Files\Rhino 8\Plug-ins\rdk.rhp “Renderer Development Kit”
C:\Program Files\Rhino 8\Plug-ins\RhinoRenderCycles.rhp “Rhino Render” 8.5.24051.15001
C:\Program Files\Rhino 8\Plug-ins\RhinoRender.rhp “Legacy Rhino Render”
C:\Program Files\Rhino 8\Plug-ins\rdk_etoui.rhp “RDK_EtoUI” 8.5.24051.15001
C:\Program Files\Rhino 8\Plug-ins\NamedSnapshots.rhp “Snapshots”
C:\Program Files\Rhino 8\Plug-ins\MeshCommands.rhp “MeshCommands” 8.5.24051.15001
C:\Program Files\Rhino 8\Plug-ins\RhinoCycles.rhp “RhinoCycles” 8.5.24051.15001
C:\Program Files\Rhino 8\Plug-ins\RhinoCode\RhinoCodePlugin.rhp “RhinoCodePlugin” 8.5.24051.15001
C:\Program Files\Rhino 8\Plug-ins\Toolbars\Toolbars.rhp “Toolbars” 8.5.24051.15001
C:\Program Files\Rhino 8\Plug-ins\3dxrhino.rhp “3Dconnexion 3D Mouse”
C:\Program Files\Rhino 8\Plug-ins\BlockEdit.rhp “BlockEdit” 8.5.24051.15001
C:\Program Files\Rhino 8\Plug-ins\Displacement.rhp “Displacement”
C:\Program Files\Rhino 8\Plug-ins\SectionTools.rhp “SectionTools”

Maybe my hardware specs are too low and Rhino 8 is performing well on McNeels test systems. If so it would be good the minimum required hardware is updated so people know what to expect before they buy the upgrade to R8.

1 Like

I have similar specs, PC built for Rhino and video editing.
My layers are more like essays, hundreds of layers and sub layers.

I hope V8 hasnt a problem on layers complexity.

64Gb DDR4 memory

Device name DESKTOP-81P1JTD
Processor AMD Ryzen 7 5700X 8-Core Processor 3.40 GHz
Installed RAM 64.0 GB
Device ID 22E19CD6-C00D-4DC4-B287-DFD894757CCF
Product ID 00330-80024-60472-AA916
System type 64-bit operating system, x64-based processor
Pen and touch No pen or touch input is available for this display

Nvidia GTX3070 8Gb Tuf Gaming

built 1.5 yrs ago

all SSD hard drives.

running V5 layers work fine. except one has to move a layer up and down or vice versa with the arrow icons else it ends up at foot of the stack.

If V8 has a layers problem with your similar specs, how is it for other users. I would like to move on from V5 without problems. ditched V7 due to some basic ones.

Hope when I install V8 all goes well.


These are my specs, it has an older generation GPU and half the RAM, maybe that would make the difference.

My other 3D programs; Fusion 360, Blender and Houdini are still running fine. It’s just Rhino 8 that feels sluggish.

Hi Niels - what is extensive? Can you give a ballpark number of layers to affect this?


Hi Pascal, I am just having a few layers expanded and visible at once. Audit says 523 layers active.

Definitely in the high side (of the models I’ve seen).

The Layers panel in Rhino 8 is brand new, and it shares no code with the panel found in Rhino 7.

Are you willing to share a model that reproduces the slowness? If it’s large or private, feel free to send it to me ( via our file upload system.


– Dale

The large file has an NDA, but I have messaged you a smaller file of a personal project.

Hi @Niels,

I’ve logged your report. Here’s a link so you can track the issue’s progress.


– Dale


I can report something similar - I just hopped on to the forum to see if others were having this issue! My model isn’t super big, not a crazy amount of layers. But expanding a layer to show sub-layers, for example, takes almost a second. A very noticeable lag, which I never experienced in R7. The main window is fine and very responsive. I have 83 layers in my model - so not crazy.

1 Like

Same problem here. Working on a file with probably 20/30 layers; opening the dialog box takes 1to 2 seconds, same for expanding/contracting layers. Running on windows on a dell precision 5560, hardware acceleration through nvidia


This has been bugging me for a while now too. Thought I was being too picky.

In my case I often don’t have more than 20 layers per file and I can notice a perceptible slowness when creating new layers.


This has also been happening to me - much slower layer UI than Rhino 7, it’s annoying and results in user error.