Rhino viewport, rotate and rendering bug

Hi,

I have just updated my Rhino to 6.21, and are having fatal errors with it.
My viewport is glitching a lot and I am not able to switch between views, zoom or rotate the view. The result when I try to do it is that Rhino just doesn’t respond.

System information:
Rhino 6 SR27 2020-6-24 (Rhino 6, 6.27.20176.05001, Git hash:master @ ba2c30de00be5a8b210bc297715204e941911799)
License type: Commercial, build 2020-06-24
License details: LAN Zoo Network Node

Windows 10.0 SR0.0 or greater (Physical RAM: 1.1e+02Gb)
Machine name: AZURE-HPC2

Non-hybrid graphics.

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: Microsoft Corporation
Render version: 0.0
Shading Language: Not supported
Driver Date: (null)
Driver Version: (null)
Maximum Texture size: 1024 x 1024
Z-Buffer depth: 32 bits
Maximum Viewport size: 16384 x 16384
Total Video Memory: n/a

Rhino plugins
C:\Program Files\Rhino 6\Plug-ins\Commands.rhp “Commands” 6.27.20176.5001
C:\Program Files\Rhino 6\Plug-ins\rdk.rhp “Renderer Development Kit”
C:\Program Files\Rhino 6\Plug-ins\RhinoRender.rhp “Rhino Render”
C:\Program Files\Rhino 6\Plug-ins\rdk_etoui.rhp “RDK_EtoUI” 6.27.20176.5001
C:\Program Files\Rhino 6\Plug-ins\rdk_ui.rhp “Renderer Development Kit UI”
C:\Program Files\Rhino 6\Plug-ins\NamedSnapshots.rhp “Snapshots”
C:\Program Files\Rhino 6\Plug-ins\RhinoCycles.rhp “RhinoCycles” 6.27.20176.5001
C:\Program Files\Rhino 6\Plug-ins\Toolbars\Toolbars.rhp “Toolbars” 6.27.20176.5001
C:\Program Files\Rhino 6\Plug-ins\3dxrhino.rhp “3Dconnexion 3D Mouse”
C:\Program Files\Rhino 6\Plug-ins\Displacement.rhp “Displacement”

Something seems amiss with your system, to my eye. Please do a clean install of the video drivers, to start with,

and make sure you have all available Windows updates as well.

-Pascal