Curves become faint when zoomed in - Worksession

Curves in an attached file (not active file) in Worksession become very faint as I zoom in IF the layer is locked. If the layer is not locked then the curves do not change appearance when zoomed in. Curves in the the active file the curves do not change appearance when zoomed in, whether the layer is unlocked or locked. I need to be able to zoom in the with the layers locked and not have the curves go faint.

MB-WS-EX.rws (740 Bytes)
MB201EX.3dm (2.8 MB)
MBContoursEX.3dm (5.3 MB)

Download the files
Open the Worksession file MB-WS-EX.rws
Zoom in towards the black and dark green-blue curves
Notice how the curves become faint when zoomed in close enough
Unlock the layers with the curves (Stations 1 and Stations 2)
Notice how the curves have normal appearance when zoomed in.

Rhino 7 SR8 2021-6-23 (Rhino 7, 7.8.21174.15001, Git hash:master @ f30806bf209be7547baaa5decc53b3dbc50946ff)
License type: Commercial, build 2021-06-23
License details: Cloud Zoo

Windows 10.0.19043 SR0.0 or greater (Physical RAM: 64Gb)

Computer platform: DESKTOP

Standard graphics configuration.
Primary display and OpenGL: NVIDIA GeForce RTX 2080 Ti (NVidia) Memory: 11GB, Driver date: 5-6-2021 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 462.59
> Accelerated graphics device with 4 adapter port(s)
- Windows Main Display attached to adapter port #0

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: 5-6-2021
Driver Version:
Maximum Texture size: 32768 x 32768
Z-Buffer depth: 24 bits
Maximum Viewport size: 32768 x 32768
Total Video Memory: 11 GB

Rhino plugins that do not ship with Rhino
C:\Program Files\Orca3D V2\Orca3D.rhp “Orca3D”
C:\Users\dcock\AppData\Roaming\McNeel\Rhinoceros\packages\7.0\IntelDenoiser\0.6.2\IntelDenoiser.Windows.rhp “IntelDenoiser.Windows”
C:\Users\dcock\AppData\Roaming\McNeel\Rhinoceros\packages\7.0\NVIDIADenoiser\0.4.0\NVIDIADenoiser.Windows.rhp “NVIDIADenoiser.Windows”

Rhino plugins that ship with Rhino
C:\Program Files\Rhino 7\Plug-ins\Commands.rhp “Commands” 7.8.21174.15001
C:\Program Files\Rhino 7\Plug-ins\rdk.rhp “Renderer Development Kit”
C:\Program Files\Rhino 7\Plug-ins\RPC.rhp “RPC”
C:\Program Files\Rhino 7\Plug-ins\AnimationTools.rhp “AnimationTools”
C:\Program Files\Rhino 7\Plug-ins\RhinoRenderCycles.rhp “Rhino Render” 7.8.21174.15001
C:\Program Files\Rhino 7\Plug-ins\RhinoRender.rhp “Legacy Rhino Render”
C:\Program Files\Rhino 7\Plug-ins\rdk_etoui.rhp “RDK_EtoUI” 7.8.21174.15001
C:\Program Files\Rhino 7\Plug-ins\rdk_ui.rhp “Renderer Development Kit UI”
C:\Program Files\Rhino 7\Plug-ins\NamedSnapshots.rhp “Snapshots”
C:\Program Files\Rhino 7\Plug-ins\RhinoCycles.rhp “RhinoCycles” 7.8.21174.15001
C:\Program Files\Rhino 7\Plug-ins\Toolbars\Toolbars.rhp “Toolbars” 7.8.21174.15001
C:\Program Files\Rhino 7\Plug-ins\3dxrhino.rhp “3Dconnexion 3D Mouse”
C:\Program Files\Rhino 7\Plug-ins\Displacement.rhp “Displacement”
C:\Users\dcock\AppData\Roaming\McNeel\Rhinoceros\packages\7.0\PanelingTools\2021.3.2.446\PanelingTools.rhp “PanelingTools”
C:\Users\dcock\AppData\Roaming\McNeel\Rhinoceros\packages\7.0\SectionTools\2021.4.21.831\SectionTools.rhp “SectionTools”

Hi David - no change here, so far; does it make any difference if you disable Orca and close and reopen Rhino? Does this show up in any display mode?

OK, I got it now - thanks. RH-64775 Worksession: Locked layer curves faded