Selecting slow in Rhino when multiple viewports are open

Rhino Rhino for Mac
,
1

Hello,

I could use some help. I’m getting lag when selecting objects when multiple viewports are open, no problem when one viewport is maximized.

2

Hi Christopher -

Please run the Rhino SystemInfo command and copy-paste its output here.
-wim

3

Rhino 8 SR22 2025-8-5 (Rhino 8, 8.22.25217.12452, Git hash:master @ 96429e6361004c775cd83973f2148f3943b5e512)
License type: Commercial, build 2025-08-05
License details: Cloud Zoo

Apple macOS Version 15.6 (Build 24G84) (Physical RAM: 48GB)
Mac Model Identifier: Mac16,6
Language: en-US (MacOS default)
.NET 8.0.14

Metal GPU Family Apple 7
Metal GPU Family Common 3
Metal GPU Family Mac 2
Graphics processors
Apple M4 Max
Color LCD (1512 x 982 @ 120.00Hz)
GPU Vendor: Apple

USB devices
None

Bluetooth devices
None

Third party kernel extensions
None

Third party plugins
/usr/lib/swift/libswiftCore.dylib
/usr/lib/swift/libswiftObjectiveC.dylib
/usr/lib/swift/libswiftCoreFoundation.dylib
/usr/lib/swift/libswiftDarwin.dylib
/usr/lib/swift/libswiftDispatch.dylib
/usr/lib/swift/libswiftIOKit.dylib
/usr/lib/swift/libswiftSystem.dylib
/usr/lib/swift/libswiftXPC.dylib
/usr/lib/swift/libswift_Builtin_float.dylib
/usr/lib/swift/libswift_Concurrency.dylib
/usr/lib/swift/libswift_StringProcessing.dylib
/usr/lib/swift/libswift_errno.dylib
/usr/lib/swift/libswift_math.dylib
/usr/lib/swift/libswift_signal.dylib
/usr/lib/swift/libswift_stdio.dylib
/usr/lib/swift/libswift_time.dylib
/usr/lib/swift/libswiftos.dylib
/usr/lib/swift/libswiftsys_time.dylib
/usr/lib/swift/libswiftunistd.dylib
/usr/lib/swift/libswiftDistributed.dylib
/usr/lib/swift/libswiftObservation.dylib
/usr/lib/swift/libswiftSynchronization.dylib
/usr/lib/swift/libswiftMetal.dylib
/usr/lib/swift/libswiftOSLog.dylib
/usr/lib/swift/libswiftQuartzCore.dylib
/usr/lib/swift/libswiftUniformTypeIdentifiers.dylib
/usr/lib/swift/libswiftsimd.dylib
/usr/lib/swift/libswiftRegexBuilder.dylib
/usr/lib/swift/libswift_RegexParser.dylib
/usr/lib/swift/libswiftCoreAudio.dylib
/usr/lib/swift/libswiftCryptoTokenKit.dylib
/usr/lib/swift/libswiftAVFoundation.dylib
/usr/lib/swift/libswiftCoreLocation.dylib
/usr/lib/swift/libswiftCoreMIDI.dylib
/usr/lib/swift/libswiftCoreMedia.dylib
/usr/lib/swift/libswiftCoreImage.dylib
/usr/lib/swift/libswiftAccelerate.dylib
/usr/lib/swift/libswiftNaturalLanguage.dylib
/usr/lib/swift/libswiftMLCompute.dylib
/usr/lib/swift/libswiftCompression.dylib
/usr/lib/swift/libswiftDataDetection.dylib
/usr/lib/swift/libswiftCoreGraphics.dylib
/usr/lib/swift/libswiftFoundation.dylib
/usr/lib/swift/libswiftSwiftOnoneSupport.dylib
/Library/Frameworks/3DconnexionClient.framework/Versions/A/3DconnexionClient
/usr/lib/usd/libusd_ms.dylib
/usr/lib/swift/libswiftIntents.dylib
/usr/lib/swift/libswiftSpatial.dylib
/usr/lib/swift/libswiftPassKit.dylib
/usr/lib/swift/libswiftAppleArchive.dylib
/usr/lib/swift/libswiftDemangle.dylib
/usr/lib/swift/libswiftVideoToolbox.dylib
/usr/lib/swift/libswiftGameplayKit.dylib
/usr/lib/swift/libswiftSpriteKit.dylib
/usr/lib/swift/libswiftGLKit.dylib
/usr/lib/swift/libswiftMetalKit.dylib
/usr/lib/swift/libswiftModelIO.dylib
/usr/lib/swift/libswiftSceneKit.dylib
/usr/lib/swift/libswiftMapKit.dylib
/usr/lib/log/liblog_network.dylib

Rhino plugins that do not ship with Rhino

Rhino plugins that ship with Rhino
/Applications/Rhino 8.app/Contents/Frameworks/RhMaterialEditor.framework “Renderer Development Kit” 8.22.25217.1002
/Applications/Rhino 8.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/Commands.rhp “Commands” 8.22.25217.12452
/Applications/Rhino 8.app/Contents/PlugIns/NamedSnapshots.rhp “Snapshots” 8.22.25217.1002
/Applications/Rhino 8.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RDK_EtoUI.rhp “RDK_EtoUI” 8.22.25217.12452
/Applications/Rhino 8.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/MeshCommands.rhp “MeshCommands” 8.22.25217.12452
/Applications/Rhino 8.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/BlockEdit.rhp “BlockEdit” 8.22.25217.12452
/Applications/Rhino 8.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RhinoRenderCycles.rhp “Rhino Render” 8.22.25217.12452
/Applications/Rhino 8.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RhinoCycles.rhp “RhinoCycles” 8.22.25217.12452
/Applications/Rhino 8.app/Contents/PlugIns/AnimationTools.rhp “AnimationTools” 8.22.25217.1002
/Applications/Rhino 8.app/Contents/PlugIns/SectionTools.rhp “SectionTools” 8.22.25217.1002
/Applications/Rhino 8.app/Contents/PlugIns/RhinoRender.rhp “Legacy Rhino Render” 8.22.25217.1002
/Applications/Rhino 8.app/Contents/PlugIns/Displacement.rhp “Displacement” 8.22.25217.1002
/Applications/Rhino 8.app/Contents/PlugIns/PanelingTools.rhp “PanelingTools” 8.22.25217.1002
/Applications/Rhino 8.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RhinoDLR_Python.rhp “IronPython” 8.22.25217.12452
/Applications/Rhino 8.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/GrasshopperPlugin.rhp “Grasshopper” 8.22.25217.12452
/Applications/Rhino 8.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RhinoCodePlugin.rhp “RhinoCodePlugin” 8.22.25217.12452

4

Hi Christopher -
Thanks. That looks fine.

Is this slow on your system when you launch Rhino, use a factory-default template, and create two rectangles? Or is this more file-specific?
-wim

5

I appears to be a file-specific

6

Hi Christopher -

Please upload that file so that we can take a closer look.
Make sure to copy a link to this thread in the comments field on that page.
Thanks,
-wim