Lagging occurs while working from an older file in version 6

I’ve been working on a file in version 5 and was doing fine and just updated the software to 6.

When working in files that were created in 5 I’m experiencing lagging while copying, pasting, turning the gumball - basically, everything I do is slow while working from an older file.

When I began working on a new file in version 6 I haven’t had any problems related to speed. Any ideas for quick fixes?


Rhino 6 SR32 2020-12-5 (Public Build, 6.32.20340.21002, Git hash:master @ f0da95af49009959d0100568acb11aea288bcea0)
License type: Evaluation, build 2020-12-05
License details: Stand-Alone
Expires on: 2021-01-05

Apple Intel 64-bit macOS Version 10.15.7 (Build 19H15) (Physical RAM: 16Gb)
Mac Model Identifier: MacBookPro11,4
Machine name: patrick dimond’s MacBook Pro
Language: en-US (MacOS default)

Intel Iris Pro OpenGL Engine (OpenGL ver:4.1 INTEL-14.7.8)

OpenGL Settings
Safe mode: Off
Use accelerated hardware modes: On
Redraw scene when viewports are exposed: On

Anti-alias mode: 4x
Mip Map Filtering: Linear
Anisotropic Filtering Mode: High

Vendor Name: Intel Inc.
Render version: 4.1
Shading Language: 4.10
Maximum Texture size: 16384 x 16384
Z-Buffer depth: n/a
Maximum Viewport size: 16384 x 16384
Total Video Memory: 1536 MB
Graphics: Intel Iris Pro
Displays: Color LCD (221dpi 2x)

Graphics processors
Intel Iris Pro (1536 MB)
Color LCD (1440 x 900)

USB devices
Apple Inc.: Apple Internal Keyboard / Trackpad
Broadcom Corp.: Bluetooth USB Host Controller
Logitech: USB Receiver

Bluetooth devices

Third party kernel extensions

Third party plugins

Rhino plugins
/Applications/ “RhinoCycles” 6.32.20340.21002
/Applications/ “Snapshots” 6.32.20340.1002
/Applications/ “Grasshopper” 6.32.20340.21002
/Applications/ “PanelingTools” 6.32.20340.1002
/Applications/ “Commands” 6.32.20340.21002
/Applications/ “RDK_EtoUI” 6.32.20340.21002
/Applications/ “Displacement” 6.32.20340.1002
/Applications/ “IronPython” 6.32.20340.21002
/Applications/ “Rhino Render” 6.32.20340.1002
/Applications/ “Renderer Development Kit” 6.32.20340.1002

Hello - are these files complex? Do they have a lot of materials? Does a simple V5 file behave the same way?



They are pretty simple. Two materials - but many surfaces. Apologies, I’m a novice - I’m unfamiliar with v5 files. Can you elaborate?


I mean, does any file, even a simple one with a box or two, show the problem in V6?

No. I’m only encountering the lagging when I copy objects out of an old file (in version 5) to the updated version. When I start with a fresh V6 file things are quick.

Please open V5. Make a box. Save the file. Does this file cause the same problems you described?


I believe I need another license key to save my v5 file, which I don’t have access to. any ideas/suggestions? When I opened v5 it was quick.

Hi - here is a simple box in the Rhino 5 file format.
When you open this in your Rhino 6, does it cause any problems on your machine?
Box-Rhino5.3dm (2.7 MB)