# \#slow

**URL:** https://discourse.mcneel.com/tag/slow/625.md

[Latest](https://discourse.mcneel.com/latest.md) · [Categories](https://discourse.mcneel.com/categories.md) · [Tags](https://discourse.mcneel.com/tags.md)

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## [\[BUG Rh9 WIP\] Significant delay when moving CV points in specific file](https://discourse.mcneel.com/t/bug-rh9-wip-significant-delay-when-moving-cv-points-in-specific-file/219570)

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**Author:** [@AlanMattano](https://discourse.mcneel.com/u/AlanMattano)\
**Replies:** 1\
**Last updated:** [June 4, 2026, 4:42pm UTC](https://discourse.mcneel.com/t/bug-rh9-wip-significant-delay-when-moving-cv-points-in-specific-file/219570 "2026-06-04T16:42:56Z")

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AM70 When moving a Control Point on a surface in the attached file, the operation takes several minutes to complete after the mouse button is released. After mesh updates, the viewport freezes or experiences extreme…

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## [Saving to version 8 is super slow](https://discourse.mcneel.com/t/saving-to-version-8-is-super-slow/218056)

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**Author:** [@erik6](https://discourse.mcneel.com/u/erik6)\
**Replies:** 0\
**Last updated:** [April 15, 2026, 3:28pm UTC](https://discourse.mcneel.com/t/saving-to-version-8-is-super-slow/218056 "2026-04-15T15:28:03Z")

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I have a 1,3 GB file that I work on in version 9. It saves very fast in version 9. Every day I save it to version 8 for safety reasons. (Using Save A Copy.) This operation takes 30 mins or so… Why is saving to version…

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## [Rhino 8 extremely slow](https://discourse.mcneel.com/t/rhino-8-extremely-slow/211760)

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**Author:** [@Mathias\_Bach](https://discourse.mcneel.com/u/Mathias_Bach)\
**Replies:** 6\
**Last updated:** [October 31, 2025, 4:58pm UTC](https://discourse.mcneel.com/t/rhino-8-extremely-slow/211760 "2025-10-31T16:58:43Z")

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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 …

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## [Slow Grasshopper](https://discourse.mcneel.com/t/slow-grasshopper/140949)

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**Author:** [@Pedro\_Abejaro\_Mut](https://discourse.mcneel.com/u/Pedro_Abejaro_Mut)\
**Replies:** 4\
**Last updated:** [January 20, 2025, 7:42pm UTC](https://discourse.mcneel.com/t/slow-grasshopper/140949 "2025-01-20T19:42:52Z")

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Hi everyone! i have a question… probably stupid one but I can figure out the problem. I have a very large definition, and everytime I make any operation (plug in some data into another one ) it takes around 1-2 seconds …

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## [Block Definitions Tab slows down Rhino](https://discourse.mcneel.com/t/block-definitions-tab-slows-down-rhino/191398)

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**Author:** [@Dominik\_Wrigley-Simo](https://discourse.mcneel.com/u/Dominik_Wrigley-Simo)\
**Replies:** 0\
**Last updated:** [September 18, 2024, 6:47am UTC](https://discourse.mcneel.com/t/block-definitions-tab-slows-down-rhino/191398 "2024-09-18T06:47:17Z")

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Hello everyone, I´ve noted for some time now, that having the Block Definitions Tab open + having “large” amount of blockdefinitions in the document will make the Rhino experience quite slow and lagging. Workaround for…

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## [Isolate command runs very slow](https://discourse.mcneel.com/t/isolate-command-runs-very-slow/169180)

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**Author:** [@Miguel\_López](https://discourse.mcneel.com/u/Miguel_L%C3%B3pez)\
**Replies:** 7\
**Last updated:** [May 9, 2024, 6:58am UTC](https://discourse.mcneel.com/t/isolate-command-runs-very-slow/169180 "2024-05-09T06:58:15Z")

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i’m using the newer version of rhinoceros 8 and the command isolate takes 3 times longer to run with the same file and object than it does in rhino 7. I don’t know why.

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## [Yak Private Custom Package is slow](https://discourse.mcneel.com/t/yak-private-custom-package-is-slow/144789)

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**Author:** [@user271](https://discourse.mcneel.com/u/user271)\
**Replies:** 9\
**Last updated:** [February 23, 2024, 2:14pm UTC](https://discourse.mcneel.com/t/yak-private-custom-package-is-slow/144789 "2024-02-23T14:14:43Z")

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Hi! We have our own file server inside our company where we push our internal plugins. Everything seems to be working correctly. But when we are searching plugins with package manager or trying to find plugin depencies…

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## [Why is Rhino 8 running so slow on my mac?](https://discourse.mcneel.com/t/why-is-rhino-8-running-so-slow-on-my-mac/175619)

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**Author:** [@Karsten\_Lunde](https://discourse.mcneel.com/u/Karsten_Lunde)\
**Replies:** 6\
**Last updated:** [February 14, 2024, 2:22pm UTC](https://discourse.mcneel.com/t/why-is-rhino-8-running-so-slow-on-my-mac/175619 "2024-02-14T14:22:26Z")

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I have used Rhino 5 for a long time on my mac with no problem before, but now that I have Rhino 8 everything is taking a very long time. I have so far only been working with simple wireframe drawings in top view in Rhino…

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## [Trim Command very slow in Rhino 8 MAC](https://discourse.mcneel.com/t/trim-command-very-slow-in-rhino-8-mac/174842)

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**Author:** [@Michael\_Altmann](https://discourse.mcneel.com/u/Michael_Altmann)\
**Replies:** 2\
**Last updated:** [February 3, 2024, 7:40pm UTC](https://discourse.mcneel.com/t/trim-command-very-slow-in-rhino-8-mac/174842 "2024-02-03T19:40:36Z")

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I have noticed that on my fully equipped MacBook Pro, the Trim function in Rhino 8 is very slow compared to Rhino 7. Only two-dimensional lines are being trimmed. The project is kind of big but nothing crazy.

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## [Rhino Extremely Slow](https://discourse.mcneel.com/t/rhino-extremely-slow/173829)

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**Author:** [@beemarie](https://discourse.mcneel.com/u/beemarie)\
**Replies:** 11\
**Last updated:** [January 21, 2024, 11:47pm UTC](https://discourse.mcneel.com/t/rhino-extremely-slow/173829 "2024-01-21T23:47:51Z")

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Hello there! Rhino is running extremely slowly for me. It runs slowly and stops responding for almost everything I ask it to do especially saving. What is the issue here?? Below I have my comp specs and this Rhino syst…

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## [Rhino 8 - slow / lag input on mac mini m1](https://discourse.mcneel.com/t/rhino-8-slow-lag-input-on-mac-mini-m1/169614)

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**Author:** [@Romainm](https://discourse.mcneel.com/u/Romainm)\
**Replies:** 8\
**Last updated:** [January 13, 2024, 12:00am UTC](https://discourse.mcneel.com/t/rhino-8-slow-lag-input-on-mac-mini-m1/169614 "2024-01-13T00:00:04Z")

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Hi, I just dowloaded the demo of rhino 8, sadly the response time seems really slow, here is a video to show the “lag”. between the pointer and the "effect / selection / polyline /… " It is hardly usable… anyone had th…

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## [Gaming pc is slow to open both files compared to business laptop](https://discourse.mcneel.com/t/gaming-pc-is-slow-to-open-both-files-compared-to-business-laptop/157148)

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**Author:** [@JeremyB](https://discourse.mcneel.com/u/JeremyB)\
**Replies:** 10\
**Last updated:** [March 27, 2023, 3:00pm UTC](https://discourse.mcneel.com/t/gaming-pc-is-slow-to-open-both-files-compared-to-business-laptop/157148 "2023-03-27T15:00:11Z")

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Hi I recently just purchased a new gaming PC to help with a complex modeling task but I can’t even get to work because I cannot even open the files even though the DESKTOP is much faster than my laptop, which was slow in…

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## [Rhino and Grasshopper Not Responding on File Opening](https://discourse.mcneel.com/t/rhino-and-grasshopper-not-responding-on-file-opening/151269)

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**Author:** [@o.strayer](https://discourse.mcneel.com/u/o.strayer)\
**Replies:** 5\
**Last updated:** [November 29, 2022, 5:38am UTC](https://discourse.mcneel.com/t/rhino-and-grasshopper-not-responding-on-file-opening/151269 "2022-11-29T05:38:05Z")

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Hello, Yesterday I was working on a big Grasshopper file… today, I can no longer open it. The Rhino file is still slow to open, and when I try to open the Grasshopper file the app goes into “Not Responding” mode indefin…

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## [Slow select and unselect of any object](https://discourse.mcneel.com/t/slow-select-and-unselect-of-any-object/146975)

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**Author:** [@Jean-Christophe\_Pino](https://discourse.mcneel.com/u/Jean-Christophe_Pino)\
**Replies:** 4\
**Last updated:** [August 26, 2022, 8:49am UTC](https://discourse.mcneel.com/t/slow-select-and-unselect-of-any-object/146975 "2022-08-26T08:49:13Z")

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Hi, I am asking on the behalf of a client. He called me this morning saying Rhino became slow since yesterday. He has now to wait 1/2 a second when selecting or unselecting an object on any of the models which where runn…

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## [Slow 2D drawing performance](https://discourse.mcneel.com/t/slow-2d-drawing-performance/146296)

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**Author:** [@Kenneth\_Frisch](https://discourse.mcneel.com/u/Kenneth_Frisch)\
**Replies:** 1\
**Last updated:** [August 10, 2022, 6:41am UTC](https://discourse.mcneel.com/t/slow-2d-drawing-performance/146296 "2022-08-10T06:41:45Z")

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Hi there, we are making alot of 2D drawings here in our company and we are experiencing that when we go from lets say 5000 to 40000 curves we get very slow performance when want to do various command with the lines like…

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## [Why is my rhino7 on mac super slow on my macbookpro 2021 !?](https://discourse.mcneel.com/t/why-is-my-rhino7-on-mac-super-slow-on-my-macbookpro-2021/145722)

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**Author:** [@kareem\_zarka](https://discourse.mcneel.com/u/kareem_zarka)\
**Replies:** 7\
**Last updated:** [July 26, 2022, 12:09pm UTC](https://discourse.mcneel.com/t/why-is-my-rhino7-on-mac-super-slow-on-my-macbookpro-2021/145722 "2022-07-26T12:09:45Z")

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why is my rhino7 on mac super slow on my macbookpro 2021 !!??

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## [Rhino 7 creating meshes when in shaded view](https://discourse.mcneel.com/t/rhino-7-creating-meshes-when-in-shaded-view/143294)

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**Author:** [@Nelsot](https://discourse.mcneel.com/u/Nelsot)\
**Replies:** 3\
**Last updated:** [June 7, 2022, 2:35pm UTC](https://discourse.mcneel.com/t/rhino-7-creating-meshes-when-in-shaded-view/143294 "2022-06-07T14:35:12Z")

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Hello, I experienced a crash on a large file I am working on as practice. ever since, the file has become unusable, even earlier versions. everytime I make an edit or even move the display rhino is remaking all the mesh…

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## [Seeing a big slow-down in Rhino latest version (7.18.22123.3001)](https://discourse.mcneel.com/t/seeing-a-big-slow-down-in-rhino-latest-version-7-18-22123-3001/142246)

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**Author:** [@rsm278](https://discourse.mcneel.com/u/rsm278)\
**Replies:** 4\
**Last updated:** [May 7, 2022, 10:15pm UTC](https://discourse.mcneel.com/t/seeing-a-big-slow-down-in-rhino-latest-version-7-18-22123-3001/142246 "2022-05-07T22:15:07Z")

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Ever since updating to this latest version I have noticed Rhino running slower in the model I have been working on for months. The model is not extremely complex, about 130mb, I have worked on models far more complex, an…

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## [Why does Rhino run so slow?](https://discourse.mcneel.com/t/why-does-rhino-run-so-slow/126235)

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**Author:** [@dsqrtz](https://discourse.mcneel.com/u/dsqrtz)\
**Replies:** 6\
**Last updated:** [June 24, 2021, 11:39am UTC](https://discourse.mcneel.com/t/why-does-rhino-run-so-slow/126235 "2021-06-24T11:39:53Z")

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I wonder why Rhino runs so slow as soon as files contain a lot of objects and points. I say this because rhino can look like a slideshow (very laggy) when panning and moving the camera around in a file, but when I look a…

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## [Rhino running slow](https://discourse.mcneel.com/t/rhino-running-slow/119482)

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**Author:** [@multumpaulina](https://discourse.mcneel.com/u/multumpaulina)\
**Replies:** 5\
**Last updated:** [March 7, 2021, 8:10pm UTC](https://discourse.mcneel.com/t/rhino-running-slow/119482 "2021-03-07T20:10:07Z")

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Hi! I’m trying new Rhinoceros on my quite new (6 months old) computer. When I open some files I’ve created on my old laptop, I thought that on the new comp I would run much better, and I acctually can’t see any differe…

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## [ShapeDiver model really slow](https://discourse.mcneel.com/t/shapediver-model-really-slow/119205)

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**Author:** [@fernandomaytorena](https://discourse.mcneel.com/u/fernandomaytorena)\
**Replies:** 4\
**Last updated:** [February 27, 2021, 7:37pm UTC](https://discourse.mcneel.com/t/shapediver-model-really-slow/119205 "2021-02-27T19:37:07Z")

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Hi, I am using ShapeDiver because I plan to start a custom furniture e-commerce store. I am currently working on the Grasshopper definitions to try out the 3D product configurator. The first definition for a “real” produ…

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## [Rhino 7 bugs massively and can not be closed](https://discourse.mcneel.com/t/rhino-7-bugs-massively-and-can-not-be-closed/117483)

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**Author:** [@hannah.decker](https://discourse.mcneel.com/u/hannah.decker)\
**Replies:** 1\
**Last updated:** [February 2, 2021, 8:02pm UTC](https://discourse.mcneel.com/t/rhino-7-bugs-massively-and-can-not-be-closed/117483 "2021-02-02T20:02:51Z")

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My rhino 7 takes ages to open files normally but now it won’t even start. My MacBook says Rhino 7 is not responding but I can’t force it to terminate like you usually can do with all programs and when I try to restart my…

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## [Lagging occurs while working from an older file in version 6](https://discourse.mcneel.com/t/lagging-occurs-while-working-from-an-older-file-in-version-6/114152)

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**Author:** [@prdimond](https://discourse.mcneel.com/u/prdimond)\
**Replies:** 7\
**Last updated:** [December 10, 2020, 10:25am UTC](https://discourse.mcneel.com/t/lagging-occurs-while-working-from-an-older-file-in-version-6/114152 "2020-12-10T10:25:14Z")

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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 - basical…

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## [Tried Paneling tools File is huge and just trying to get bricks grouped together,](https://discourse.mcneel.com/t/tried-paneling-tools-file-is-huge-and-just-trying-to-get-bricks-grouped-together/112732)

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**Author:** [@rlabib](https://discourse.mcneel.com/u/rlabib)\
**Replies:** 1\
**Last updated:** [November 20, 2020, 6:27am UTC](https://discourse.mcneel.com/t/tried-paneling-tools-file-is-huge-and-just-trying-to-get-bricks-grouped-together/112732 "2020-11-20T06:27:41Z")

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Hello! I am beyond frustrated, I’m trying to model brick on a building and have different patches of different types of brick and I’ve coded it by color. so they’ll be in different spots. and i can do it manually, by c…

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## [Move, Rotate and other commands very slow](https://discourse.mcneel.com/t/move-rotate-and-other-commands-very-slow/109096)

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**Author:** [@Julian\_Botti](https://discourse.mcneel.com/u/Julian_Botti)\
**Replies:** 2\
**Last updated:** [September 22, 2020, 5:29pm UTC](https://discourse.mcneel.com/t/move-rotate-and-other-commands-very-slow/109096 "2020-09-22T17:29:17Z")

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Hi, I’m having issues with Rhino’s performance. The PC has the latest soft and hardware. The issue happens with a certain file. Everything works perfect when I hide one specific mesh. Video:

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## [A very simple geometry with many issues](https://discourse.mcneel.com/t/a-very-simple-geometry-with-many-issues/57185)

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**Author:** [@Aiden\_Kashi](https://discourse.mcneel.com/u/Aiden_Kashi)\
**Replies:** 2\
**Last updated:** [March 12, 2018, 7:39pm UTC](https://discourse.mcneel.com/t/a-very-simple-geometry-with-many-issues/57185 "2018-03-12T19:39:48Z")

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File: https://drive.google.com/open?id=1wC3NxGTrEUsD3G44f30JgE7asRBGWRxd Ok so I feel like there is something that Im missing in using Rhino. This is a very simple surface with many perforations, but I feel like a 600MB…

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## [Print Dialog So Slow](https://discourse.mcneel.com/t/print-dialog-so-slow/51833)

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**Author:** [@taffeldt](https://discourse.mcneel.com/u/taffeldt)\
**Replies:** 1\
**Last updated:** [December 19, 2017, 7:29pm UTC](https://discourse.mcneel.com/t/print-dialog-so-slow/51833 "2017-12-19T19:29:44Z")

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Print dialog is incredibly slow (5-10 minutes) when changing any options, printing to PDF, etc.