V6 "Jaggies"

I have a lot more jagged edges in various display modes in V6 than in V5 with the same model. Any idea why this might be. I’ve tried adjusting the anti-alias settings in the openGL box under options, but that doesn’t seem to help. Systeminfo below.

Thanks,
Dennis

Rhino 6 SR5 2018-6-4 (Rhino 6, 6.5.18155.13161, Git hash:master @ 0e00e118078ee9a651d609817f672fb0ed8e83bf)
Licence type: Commercial, build 2018-06-04
License details: Cloud Zoo. In use by: Dennis ()

Windows 10.0 SR0.0 or greater (Physical RAM: 16Gb)
Machine name: SURFACE-BOOK

GeForce GTX 965M/PCIe/SSE2 (OpenGL ver:4.6.0 NVIDIA 388.08)

OpenGL Settings
Safe mode: Off
Use accelerated hardware modes: On
Redraw scene when viewports are exposed: On

Anti-alias mode: 8x
Mip Map Filtering: Linear
Anisotropic Filtering Mode: Height

Vendor Name: NVIDIA Corporation
Render version: 4.6
Shading Language: 4.60 NVIDIA
Driver Date: 10-19-2017
Driver Version: 23.21.13.8808
Maximum Texture size: 16384 x 16384
Z-Buffer depth: 24 bits
Maximum Viewport size: 16384 x 16384
Total Video Memory: 2 GB

C:\Program Files\Rhino 6\Plug-ins\Commands.rhp “Commands”
C:\Program Files\Rhino 6\Plug-ins\rdk.rhp “Renderer Development Kit”
C:\Program Files\Rhino 6\Plug-ins\IdleProcessor.rhp “IdleProcessor”
C:\Program Files\Rhino 6\Plug-ins\RhinoRender.rhp “Rhino Render”
C:\Program Files\Rhino 6\Plug-ins\rdk_etoui.rhp “RDK_EtoUI”
C:\Program Files\Rhino 6\Plug-ins\rdk_ui.rhp “Renderer Development Kit UI”
C:\Program Files\Common Files\McNeel\Rhinoceros\6.0\Plug-ins\PanelingTools (6caed836-bc06-4ebc-b1fd-e10886a0dc94)\2017.11.15.520\PanelingTools.rhp “PanelingTools”
C:\Program Files\Rhino 6\Plug-ins\NamedSnapshots.rhp “Snapshots”
C:\Program Files\Rhino 6\Plug-ins\RhinoCycles.rhp “RhinoCycles”
C:\Program Files\Rhino 6\Plug-ins\Toolbars\Toolbars.rhp “Toolbars”
C:\Program Files\Rhino 6\Plug-ins\3dxrhino.rhp “3Dconnexion 3D Mouse”
C:\Program Files\Rhino 6\Plug-ins\Displacement.rhp “Displacement”