Thanks, @KeithR .
My system info is shown below with personal info replaced by ######
Rhino 6 SR25 2020-4-23 (Public Build, 6.25.20114.03572, Git hash:master @ f35d7ded15ec317635ced435d8df84327397038d)
License type: Educational Lab License, build 2020-04-23
License details: Cloud Zoo. In use by: ######
Apple Intel 64-bit macOS Version 10.15.4 (Build 19E287) (Physical RAM: 16Gb)
Mac Model Identifier: iMac16,2
Machine name: ######
Language: en-GB (MacOS default)
Intel® Iris™ Pro Graphics 6200 (OpenGL ver:4.1 INTEL-14.5.22)
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: Height
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 Graphics 6200
Displays: iMac (217dpi 2x)
Graphics processors
Intel Iris Pro Graphics 6200 (1536 MB)
iMac (2048 x 1152)
USB devices
Broadcom Corp.: Bluetooth USB Host Controller
Apple Inc.: FaceTime HD Camera (Built-in)
Apple Inc.: Apple Keyboard
Bluetooth devices
Broadcom: BTIS, Audio Sink, GEARMANAGER3, SAMSUNGDEVICEs
Broadcom: Magic Mouse 2
Apple: Apple Wireless Trackpad
Third party kernel extensions
com.paragon-software.filesystems.ntfs (62.5.15) 9B7B3A35-65B9-34FA-A8A7-DF08CE50FB36
Third party plugins
/usr/lib/swift/libswiftCore.dylib
/usr/lib/swift/libswiftCoreFoundation.dylib
/usr/lib/swift/libswiftCoreGraphics.dylib
/usr/lib/swift/libswiftDarwin.dylib
/usr/lib/swift/libswiftDispatch.dylib
/usr/lib/swift/libswiftFoundation.dylib
/usr/lib/swift/libswiftIOKit.dylib
/usr/lib/swift/libswiftObjectiveC.dylib
/usr/lib/swift/libswiftXPC.dylib
/usr/lib/swift/libswiftCryptoTokenKit.dylib
/usr/lib/swift/libswiftos.dylib
/usr/lib/log/liblog_network.dylib
Rhino plugins
/Applications/Rhinoceros.app/Contents/PlugIns/PanelingTools.rhp “PanelingTools” 6.25.20114.1002
/Applications/Rhinoceros.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/GrasshopperPlugin.rhp “Grasshopper” 6.25.20114.3572
/Applications/Rhinoceros.app/Contents/PlugIns/AnimationTools.rhp “AnimationTools” 6.25.20114.1002
/Applications/Rhinoceros.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RhinoDLR_Python.rhp “IronPython” 6.25.20114.3572
/Applications/Rhinoceros.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/Commands.rhp “Commands” 6.25.20114.3572
/Applications/Rhinoceros.app/Contents/PlugIns/NamedSnapshots.rhp “Snapshots” 6.25.20114.1002
/Applications/Rhinoceros.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RDK_EtoUI.rhp “RDK_EtoUI” 6.25.20114.3572
/Applications/Rhinoceros.app/Contents/PlugIns/Displacement.rhp “Displacement” 6.25.20114.1002
/Applications/Rhinoceros.app/Contents/Frameworks/RhMaterialEditor.framework “Renderer Development Kit” 6.25.20114.1002
/Applications/Rhinoceros.app/Contents/PlugIns/RhinoRender.rhp “Rhino Render” 6.25.20114.1002
/Applications/Rhinoceros.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RhinoCycles.rhp “RhinoCycles” 6.25.20114.3572