Still have slow undo

i’m still suffering from undo being very slow. any ideas?

Rhino 7 SR1 2020-12-2 (Rhino 7, 7.1.20337.05001, Git hash:master @ 5c341516d2f548c8e4859a9aed89600f09c5203a)
License type: Evaluation, build 2020-12-02
License details: Stand-Alone
Expires on: 2021-03-08

Windows 10.0 SR0.0 or greater (Physical RAM: 32Gb)

Hybrid graphics system.
Primary display: Intel(R) UHD Graphics P630 (Intel) Memory: 1GB, Driver date: 3-9-2020 (M-D-Y).
Primary OpenGL: NVIDIA Quadro P1000 (NVidia) Memory: 4GB, Driver date: 11-6-2020 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 457.30

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: 11-6-2020
  Driver Version: 27.21.14.5730
  Maximum Texture size: 32768 x 32768
  Z-Buffer depth: 24 bits
  Maximum Viewport size: 32768 x 32768
  Total Video Memory: 4 GB

Rhino plugins that do not ship with Rhino

Rhino plugins that ship with Rhino
  C:\Program Files\Rhino 7\Plug-ins\SolidTools.rhp	"SolidTools"	
  C:\Program Files\Rhino 7\Plug-ins\Commands.rhp	"Commands"	7.1.20337.5001
  C:\Program Files\Rhino 7\Plug-ins\rdk.rhp	"Renderer Development Kit"	
  C:\Program Files\Rhino 7\Plug-ins\RhinoScript.rhp	"RhinoScript"	
  C:\Program Files\Rhino 7\Plug-ins\RPC.rhp	"RPC"	
  C:\Program Files\Rhino 7\Plug-ins\RhinoRenderCycles.rhp	"Rhino Render"	7.1.20337.5001
  C:\Program Files\Rhino 7\Plug-ins\RhinoRender.rhp	"Legacy Rhino Render"	
  C:\Program Files\Rhino 7\Plug-ins\rdk_etoui.rhp	"RDK_EtoUI"	7.1.20337.5001
  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"	7.1.20337.5001
  C:\Program Files\Rhino 7\Plug-ins\Toolbars\Toolbars.rhp	"Toolbars"	7.1.20337.5001
  C:\Program Files\Rhino 7\Plug-ins\Displacement.rhp	"Displacement"