Parts of Rhino Model Disappear During Flythrough Animation

I have the same issue. Only half way through the animation the structure slowly reveals itself:


2025-06-04+02_disappearing.3dm (98.9 KB)

I cannot use that. Output of _SystemInfo:

Rhino 8 SR12 2024-10-8 (Rhino 8, 8.12.24282.07001, Git hash:master @ 2f42167325d83e0da0f3fe08e796c2b26e602bc5)
License type: Commercial, build 2024-10-08
License details: Cloud Zoo

Windows 11 (10.0.26100 SR0.0) or greater (Physical RAM: 16GB)
.NET 7.0.20

Computer platform: LAPTOP  - Plugged in [92% battery remaining]

Hybrid graphics configuration.
  Primary display: Intel(R) UHD Graphics 620 (Intel) Memory: 1GB, Driver date: 3-3-2023 (M-D-Y).
    > Integrated graphics device with 3 adapter port(s)
        - Windows Main Display is laptop's integrated screen or built-in port
  Primary OpenGL: NVIDIA RTX A2000 12GB (NVidia) Memory: 12GB, Driver date: 10-26-2021 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 472.47
    > Integrated accelerated graphics device with 4 adapter port(s)
        - Video pass-through to primary display device

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: 4x
  Mip Map Filtering: Linear
  Anisotropic Filtering Mode: High
  
  Vendor Name: NVIDIA Corporation
  Render version: 4.6
  Shading Language: 4.60 NVIDIA
  Driver Date: 10-26-2021
  Driver Version: 30.0.14.7247
  Maximum Texture size: 32768 x 32768
  Z-Buffer depth: 24 bits
  Maximum Viewport size: 32768 x 32768
  Total Video Memory: 12282 MB

Rhino plugins that do not ship with Rhino
  C:\Users\Felix\AppData\Roaming\McNeel\Rhinoceros\packages\8.0\Karamba3D\3.1.50414\net7.0-windows\Karamba3D_LicensePlugin_Rhino8.rhp	"Karamba3DLicense"	

Rhino plugins that ship with Rhino
  C:\Program Files\Rhino 8\Plug-ins\Commands.rhp	"Commands"	8.12.24282.7001
  C:\Program Files\Rhino 8\Plug-ins\rdk.rhp	"Renderer Development Kit"	
  C:\Program Files\Rhino 8\Plug-ins\RhinoRenderCycles.rhp	"Rhino Render"	8.12.24282.7001
  C:\Program Files\Rhino 8\Plug-ins\rdk_etoui.rhp	"RDK_EtoUI"	8.12.24282.7001
  C:\Program Files\Rhino 8\Plug-ins\NamedSnapshots.rhp	"Snapshots"	
  C:\Program Files\Rhino 8\Plug-ins\MeshCommands.rhp	"MeshCommands"	8.12.24282.7001
  C:\Program Files\Rhino 8\Plug-ins\RhinoCycles.rhp	"RhinoCycles"	8.12.24282.7001
  C:\Program Files\Rhino 8\Plug-ins\Grasshopper\GrasshopperPlugin.rhp	"Grasshopper"	8.12.24282.7001
  C:\Program Files\Rhino 8\Plug-ins\Toolbars\Toolbars.rhp	"Toolbars"	8.12.24282.7001
  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"