Hey,
I’m looking for a solution to the problem, over time when I work on files in worksession in rhino, it works slower and slower, the files don’t get bigger, and I don’t add textures, every now and then I’ll go into the file and change a few things and that’s it. Nevertheless, each subsequent session is getting worse, the files take longer to upload and the textures multiply with each input? I admit that I do not know what I am doing wrong and what is the reason for this?
Cheers!
Worksessions are a fabulous workflow, but somehow, they have been botched.
I don’t know what it is ; memory management perhaps ?
But when you right click on one of those large attached layers, Rhino falls in a coma, just like if he was loading the file 100 times in memory for nothing.
I just want to detach, or update, but simply trying to access these options takes MUCH too long.
It ruins the whole concept.
Exactly, when I put together a small project on it, it works very quickly and quite smoothly, but even after a while smaller projects start to run slower. The biggest problem I have is with large projects, it becomes a bigger problem than one large file. I tried to work this way on an apartment project with my colleagues, but putting it together and releasing the visualization with materials was very difficult and simple activities took a lot of time. I’ll try to see if it works on Rhino 8, because it was very resistant on Rhino 7.
This sounds related to this youtrack on textures in worksessions i filed recently and has a fix coming in 8.7.
If you mean Rhino 8 SR 7, that’s the one I’m using and still pestering with the sluggishness about.
Its a private youtrack due to the users uploaded file. The release target is 8.7 but currently marked needs testing but not in the current build. You can see if a fix for a specific youtrack is available by running the GetIssueState command and inputting the youtrack # (in this case RH-81197)
Thanks for your interest, I’m starting a large project in Rhino 8 and I will check if there is any improvement compared to previous projects 
Did you ever get worksession to run smoothly in Rhino 8?
I am personally experiencing similar issues in Rhino 7. I have three larger files linked through worksession. When I have the worksession window open it takes FOREVER to operate any of its buttons (attach/update etc). As soon as I try to hit any of the buttons Rhino freezes for a very long time. When I finally manage to close the worksession window, the file runs smoothly however.
I tried to use Worksession this week with files containing large point clouds.
It just wasted my time. I finally imported all the files into a single one and I could work normally.
Apart from using it with relatively small files (which is kind of silly), worksession is just a broken promise.
This keeps happening. I use worksession from time to time but it’s so slow on large models. Just the act of opening that worksession window or right clicking on a attach file sends rhino to a lock state. I think I might end up importing with reference
This is my system info
Rhino 8 SR26 2025-12-3 (Rhino 8, 8.26.25337.13001, Git hash:master @ 8101f3280c017a52117cccd1b45f88ed34f79f7b)
License type: Commercial, build 2025-12-03
License details: Cloud Zoo
Windows 11 (10.0.22631 SR0.0) or greater (Physical RAM: 32GB)
.NET 8.0.14
Computer platform: DESKTOP
Standard graphics configuration.
Primary display and OpenGL: NVIDIA T400 4GB (NVidia) Memory: 4GB, Driver date: 6-17-2025 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 573.44
Accelerated graphics device with 4 adapter port(s)
Secondary graphics devices.
Intel(R) UHD Graphics 770 (Intel) Memory: 2GB, Driver date: 8-19-2025 (M-D-Y).
Integrated graphics device with 4 adapter port(s)
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: 6-17-2025
Driver Version: 32.0.15.7344
Maximum Texture size: 32768 x 32768
Z-Buffer depth: 24 bits
Maximum Viewport size: 32768 x 32768
Total Video Memory: 4 GB
Rhino plugins that do not ship with Rhino
C:\Program Files\Chaos\V-Ray\V-Ray for Rhinoceros\V8\VRayForRhino.rhp “V-Ray for Rhino”
C:\Users\jnavarro\AppData\Roaming\McNeel\Rhinoceros\packages\8.0\LandArchTools\2.0.4\net7.0\LandArchTools.rhp “LandArchTools” 2.0.4.0
C:\Users\jnavarro\AppData\Roaming\McNeel\Rhinoceros\packages\8.0\Runchat\0.3.18\Runchat.rhp “Runchat.Rhino” 1.0.0.0
C:\Users\jnavarro\AppData\Roaming\McNeel\Rhinoceros\packages\8.0\PlanFinder\1.3.1\PlanFinderRhino8.rhp “PlanFinderRhino8” 1.0.0.0
Rhino plugins that ship with Rhino
C:\Program Files\Rhino 8\Plug-ins\SolidTools.rhp “SolidTools”
C:\Program Files\Rhino 8\Plug-ins\Commands.rhp “Commands” 8.26.25337.13001
C:\Program Files\Rhino 8\Plug-ins\rdk.rhp “Renderer Development Kit”
C:\Program Files\Rhino 8\Plug-ins\export_ACAD.rhp “AutoCAD file export : export_ACAD”
C:\Program Files\Rhino 8\Plug-ins\RhinoRenderCycles.rhp “Rhino Render” 8.26.25337.13001
C:\Program Files\Rhino 8\Plug-ins\RhinoRender.rhp “Legacy Rhino Render”
C:\Program Files\Rhino 8\Plug-ins\rdk_etoui.rhp “RDK_EtoUI” 8.26.25337.13001
C:\Program Files\Rhino 8\Plug-ins\NamedSnapshots.rhp “Snapshots”
C:\Program Files\Rhino 8\Plug-ins\MeshCommands.rhp “MeshCommands” 8.26.25337.13001
C:\Program Files\Rhino 8\Plug-ins\IronPython\RhinoDLR_Python.rhp “IronPython” 8.26.25337.13001
C:\Program Files\Rhino 8\Plug-ins\RhinoCycles.rhp “RhinoCycles” 8.26.25337.13001
C:\Program Files\Rhino 8\Plug-ins\Grasshopper\GrasshopperPlugin.rhp “Grasshopper” 8.26.25337.13001
C:\Program Files\Rhino 8\Plug-ins\RhinoCode\RhinoCodePlugin.rhp “RhinoCodePlugin” 8.26.25337.13001
C:\Program Files\Rhino 8\Plug-ins\Toolbars\Toolbars.rhp “Toolbars” 8.26.25337.13001
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”
I can’t upload the file but mine weights 700mb as a large context model.