video playback both online and offline sort of rewinds say 500 millisecs at any random instanr

Video playback is not smooth.
Videos on vlc, youtube etc.. does some crazy back and forth loop for a few milliseconds in between the playback.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: pulseaudio 1:13.99.1-1ubuntu3.11
ProcVersionSignature: Ubuntu 5.8.0-63.71~20.04.1-generic 5.8.18
Uname: Linux 5.8.0-63-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu27.18
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: prashant 2246 F.... pulseaudio
CasperMD5CheckResult: skip
Date: Wed Jul 21 12:52:37 2021
InstallationDate: Installed on 2021-07-17 (3 days ago)
InstallationMedia: Ubuntu 20.04.2.0 LTS "Focal Fossa" - Release amd64 (20210209.1)
ProcEnviron:
 LANGUAGE=en_IN:en
 TERM=xterm-256color
 PATH=(custom, no user)
 LANG=en_IN
 SHELL=/bin/bash
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
SourcePackage: pulseaudio
Symptom: audio
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/20/2019
dmi.bios.release: 15.145
dmi.bios.vendor: Insyde
dmi.bios.version: F.91
dmi.board.asset.tag: Type2 - Board Asset Tag
dmi.board.name: 80A4
dmi.board.vendor: HP
dmi.board.version: 91.1E
dmi.chassis.type: 10
dmi.chassis.vendor: HP
dmi.chassis.version: Chassis Version
dmi.ec.firmware.release: 91.30
dmi.modalias: dmi:bvnInsyde:bvrF.91:bd08/20/2019:br15.145:efr91.30:svnHP:pnHPPavilionNotebook:pvrType1ProductConfigId:rvnHP:rn80A4:rvr91.1E:cvnHP:ct10:cvrChassisVersion:
dmi.product.family: 103C_5335KV G=N L=CON B=HP S=PAV X=Null
dmi.product.name: HP Pavilion Notebook
dmi.product.sku: T0Z59PA#ACJ
dmi.product.version: Type1ProductConfigId
dmi.sys.vendor: HP