Delay in audio when playing Video or Music

[Víctor]

In Ubuntu 20.04.3 LTS when I play a video in youtube in my Firefox browser (Snap package), I can watch the image of the video since second 0 with no problem, but the sound of the video comes 4-5 seconds later. It occurs usually with the first video that you open when you open the browser, but can happen later.

This happen too when I play a video in VLC, the image of the video comes instantly buy the sound comes several seconds later.

Please fix it, in the past it worked well, but it is happening since few weeks.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: alsa-base 1.0.25+dfsg-0ubuntu5
ProcVersionSignature: Ubuntu 5.11.0-46.51~20.04.1-generic 5.11.22
Uname: Linux 5.11.0-46-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu27.21
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC2: pitx 1779 F.... pulseaudio
 /dev/snd/controlC0: pitx 1779 F.... pulseaudio
 /dev/snd/controlC1: pitx 1779 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Sat Jan 15 13:05:01 2022
InstallationDate: Installed on 2021-01-14 (365 days ago)
InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
PackageArchitecture: all
ProcEnviron:
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=es_ES.UTF-8
 SHELL=/bin/bash
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:NVidia failed
Symptom_Card: USB 2.0 Camera - USB 2.0 Camera
Symptom_Type: None of the above
Title: [HDA-Intel - HDA NVidia, playback] Playback problem
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/04/2020
dmi.bios.release: 5.17
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 3001
dmi.board.asset.tag: Default string
dmi.board.name: PRIME X570-PRO
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: Rev X.0x
dmi.chassis.asset.tag: Default string
dmi.chassis.type: 3
dmi.chassis.vendor: Default string
dmi.chassis.version: Default string
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr3001:bd12/04/2020:br5.17:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:skuSKU:rvnASUSTeKCOMPUTERINC.:rnPRIMEX570-PRO:rvrRevX.0x:cvnDefaultstring:ct3:cvrDefaultstring:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: System Product Name
dmi.product.sku: SKU
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer