Rhino 8 extremely slow

Rhino Rhino for Windows
, ,
1

Hi!

I have Rhino 8 installed, and I experience it beinge extremely slow, when using different commands. Now, it also takes aaaaages to open, save and close files. Is there anything that you can do to fix it?

See below for SystemInfo:

Rhino 8 SR24 2025-10-8 (Rhino 8, 8.24.25281.15001, Git hash:master @ ba28668a8431990c700173e46ef2dbcb873cf092)
License type: Commercial, build 2025-10-08
License details: Cloud Zoo

Windows 11 (10.0.26100 SR0.0) or greater (Physical RAM: 16GB)
.NET 8.0.14

Computer platform: DESKTOP

Standard graphics configuration.
Primary display and OpenGL: AMD Radeon RX 6600 (AMD) Memory: 8GB, Driver date: 11-27-2024 (M-D-Y). OpenGL Ver: 4.6.0 Compatibility Profile Context 24.12.1.241127
> Accelerated graphics device with 6 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: ATI Technologies Inc.
Render version: 4.6
Shading Language: 4.60
Driver Date: 11-27-2024
Driver Version: 32.0.12033.1030
Maximum Texture size: 16384 x 16384
Z-Buffer depth: 24 bits
Maximum Viewport size: 16384 x 16384
Total Video Memory: 8121 MB

Rhino plugins that do not ship with Rhino
C:\\Program Files\\Enscape\\Enscape.Rhino.Plugin-net48\\Enscape.Rhino8.Plugin.dll	“Enscape.Rhino8.Plugin”	4.3.0.1186

Rhino plugins that ship with Rhino
C:\\Program Files\\Rhino 8\\Plug-ins\\Commands.rhp	“Commands”	8.24.25281.15001
C:\\Program Files\\Rhino 8\\Plug-ins\\rdk.rhp	“Renderer Development Kit”	
C:\\Program Files\\Rhino 8\\Plug-ins\\AnimationTools.rhp	“AnimationTools”	
C:\\Program Files\\Rhino 8\\Plug-ins\\RhinoRenderCycles.rhp	“Rhino Render”	8.24.25281.15001
C:\\Program Files\\Rhino 8\\Plug-ins\\RhinoRender.rhp	“Legacy Rhino Render”	
C:\\Program Files\\Rhino 8\\Plug-ins\\rdk_etoui.rhp	“RDK_EtoUI”	8.24.25281.15001
C:\\Program Files\\Rhino 8\\Plug-ins\\NamedSnapshots.rhp	“Snapshots”	
C:\\Program Files\\Rhino 8\\Plug-ins\\MeshCommands.rhp	“MeshCommands”	8.24.25281.15001
C:\\Program Files\\Rhino 8\\Plug-ins\\RhinoCycles.rhp	“RhinoCycles”	8.24.25281.15001
C:\\Program Files\\Rhino 8\\Plug-ins\\Toolbars\\Toolbars.rhp	“Toolbars”	8.24.25281.15001
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”
2

This with all files, even simple ones, or just one file?

I would update the video drivers, they are nearly a year old. Also, maybe try temporarily disabling Enscape and see if the problem goes away.

3

It varies, but yes - this file in particular.

I have updated my video drive and disable enscape. No change. It also tried to purge unused layers and blocks, but no change either. It is a larger file, but when my colleague uses a R7 verison of it, it runs more smoothly.

4

That’s something that people (myself included)see from time to time, a certain largish file getting obnoxiously slow, if you’ve got a file that shows this consistently in a certain version of Rhino send it to support@mcneel.com.

5

So, send the file it self?

Sadly I can not do that, as the work is confidential. Is there another way for them to assist me, without seeing the content of the file?

6

They’re aware people send them confidential stuff all the time, it’s the nature of support right? And without files they’ve got no way of even beginning to figure out what might be going on.

7

Using the link provided sends it directly to McNeel support. It never shows up here in the forum.

Perhaps if the slowness really troubles you, you can seek permission from your superiors or client to share it with McNeel for troubleshooting purposes.

FWIW I have never seen anything on the forum from someone whose confidentially shared data escaped from McNeel.