Rhino7 freezes for a while with "Undo" - "save file " and "Copy/Paste" so far

Hello,
Since I switched from Rhino6 to Rhino7, I cannot get the efficiency I want from Rhino7. In particular ^ Undo ^ Save Copy / Paste. I use these commands frequently while modeling and Rhino7 freezes for a few seconds. This situation can be really annoying for me.
Watch the video as a proof.
I guess there are bugs in the Rhino7 program.

Rhino6 installed on the same computer performance is fine and I can work without any problems.

My request from Rhino7 developers, please help in this regard.


updated Rhino 7 Version (7.3.21026.13001, 1/26/2021)

Windows 10.0.19042 SR0.0 or greater (Physical RAM: 16Gb)

Computer platform: DESKTOP

Standard graphics configuration.
Primary display and OpenGL: NVIDIA GeForce GT 740 (NVidia) Memory: 4GB, Driver date: 11-22-2020 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 457.51
> Accelerated graphics device with 3 adapter port(s)
- Windows Main Display attached to adapter port #0

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: High

Vendor Name: NVIDIA Corporation
Render version: 4.6
Shading Language: 4.60 NVIDIA
Driver Date: 11-22-2020
Driver Version: 27.21.14.5751
Maximum Texture size: 16384 x 16384
Z-Buffer depth: 24 bits
Maximum Viewport size: 16384 x 16384
Total Video Memory: 4 GB

Rhino plugins that do not ship with Rhino
C:\Users\xoxo\AppData\Roaming\McNeel\Rhinoceros\6.0\Plug-ins\KeyShot9RhinoPlugin (ecfe8d1f-876a-460f-aa5e-3dd816936811)\1.0.0.0\KeyShot9RhinoPlugin\Rhino 5.0\KeyShot9RhinoPlugin.rhp “KeyShot9RhinoPlugin” 1.0.0.0

Rhino plugins that ship with Rhino
C:\Program Files\Rhino 7\Plug-ins\Commands.rhp “Commands” 7.2.20343.11011
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” 7.2.20343.11011
C:\Program Files\Rhino 7\Plug-ins\RhinoRender.rhp “Legacy Rhino Render”
C:\Program Files\Rhino 7\Plug-ins\rdk_etoui.rhp “RDK_EtoUI” 7.2.20343.11011
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” 7.2.20343.11011
C:\Program Files\Rhino 7\Plug-ins\Toolbars\Toolbars.rhp “Toolbars” 7.2.20343.11011
C:\Program Files\Rhino 7\Plug-ins\3dxrhino.rhp “3Dconnexion 3D Mouse”
C:\Program Files\Rhino 7\Plug-ins\Displacement.rhp “Displacement”

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Thanks