cpu frequency has become 10% (current frequency is 0.23 GHz) of normal frequency, which is below than the lowest possible frequency (0.8 GHz)

[Yug Kansara]

After sudo apt-get upgrade, the fps started to dropped dramatically, on checking cpu frequency, i found out that cpu frequency is currently 10% of normal frequency. Currently cpu is at 0.23 GHz, the range of CPU frequency of my computer is 0.8 GHz to 4 GHz. Due to this decrease in frequency, computer has dropeed fps significantly and i can not do any work like this. Please help resolve the issue ASAP

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: ubuntu-release-upgrader-core 1:20.04.32
ProcVersionSignature: Ubuntu 5.8.0-50.56~20.04.1-generic 5.8.18
Uname: Linux 5.8.0-50-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu27.17
Architecture: amd64
CasperMD5CheckResult: skip
CrashDB: ubuntu
CurrentDesktop: ubuntu:GNOME
Date: Sun May 9 22:16:19 2021
InstallationDate: Installed on 2021-05-09 (0 days ago)
InstallationMedia: Ubuntu 20.04.2.0 LTS "Focal Fossa" - Release amd64 (20210209.1)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_IN:en
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_IN
 SHELL=/bin/bash
SourcePackage: ubuntu-release-upgrader
Symptom: dist-upgrade
UpgradeStatus: No upgrade log present (probably fresh install)