Nautilus very slow to response

[Dr Anirban Mitra]

Every action of nautilus has become considerable slower after upgrading from 18.04.05 to 20.04.03

$ lsb_release -rd
Description: Ubuntu 20.04.3 LTS
Release: 20.04

apt-cache policy nautilus
nautilus:
  Installed: 1:3.36.3-0ubuntu1
  Candidate: 1:3.36.3-0ubuntu1
  Version table:
 *** 1:3.36.3-0ubuntu1 500
        500 http://archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages
        100 /var/lib/dpkg/status
     1:3.36.1.1-1ubuntu2 500
        500 http://in.archive.ubuntu.com/ubuntu focal/main amd64 Packages
What you expected to happen
 clicking on an icon in file manager will open the folder or open the file and right clicking will open up the shortcut menu
 What happened instead
the window becomes unresponsive for 30seconsd o 2 minutes then expected action occurs
system monitor shows nautilus is using lots of processor power

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: nautilus 1:3.36.3-0ubuntu1
ProcVersionSignature: Ubuntu 5.4.0-88.99-generic 5.4.140
Uname: Linux 5.4.0-88-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu27.20
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Thu Sep 30 15:44:08 2021
GsettingsChanges:
 b'org.gnome.nautilus.window-state' b'sidebar-width' b'192'
 b'org.gnome.nautilus.window-state' b'maximized' b'true'
 b'org.gnome.nautilus.preferences' b'default-folder-viewer' b"'list-view'"
 b'org.gnome.nautilus.list-view' b'default-zoom-level' b"'small'"
InstallationDate: Installed on 2020-01-03 (635 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
SourcePackage: nautilus
UpgradeStatus: Upgraded to focal on 2021-09-16 (13 days ago)
usr_lib_nautilus: