[USB-Audio - ThinkPad Thunderbolt 3 Dock USB, playback] Underruns, dropouts or crackling sound

[Diko Parvanov]

on dmesg getting those when the audio crackles, furthermore
[сб мар 26 18:40:54 2022] retire_capture_urb: 952 callbacks suppressed
[сб мар 26 18:40:59 2022] retire_capture_urb: 843 callbacks suppressed
[сб мар 26 18:41:06 2022] retire_capture_urb: 366 callbacks suppressed

this also affects the video stream from webcam

oddly this does not occur (both sound and video are fine, and no callbacks suppressed) while running stress -c 1 in a terminal (workaround to use my pc..)

tried adding: pcie_aspm.policy=performance
also tried pcie_aspm=off

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: alsa-base 1.0.25+dfsg-0ubuntu5
ProcVersionSignature: Ubuntu 5.4.0-105.119-generic 5.4.174
Uname: Linux 5.4.0-105-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu27.21
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC4: dparv 146908 F.... pulseaudio
 /dev/snd/controlC2: dparv 146908 F.... pulseaudio
 /dev/snd/controlC1: dparv 146908 F.... pulseaudio
 /dev/snd/controlC0: dparv 146908 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: i3
Date: Sat Mar 26 22:26:58 2022
EcryptfsInUse: Yes
InstallationDate: Installed on 2018-12-20 (1192 days ago)
InstallationMedia: Ubuntu 18.10 "Cosmic Cuttlefish" - Release amd64 (20181017.3)
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:USB successful
Symptom_Card: ThinkPad Thunderbolt 3 Dock USB Audio - ThinkPad Thunderbolt 3 Dock USB
Symptom_PulsePlaybackTest: PulseAudio playback test successful
Symptom_Type: Underruns, dropouts, or "crackling" sound
Title: [USB-Audio - ThinkPad Thunderbolt 3 Dock USB, playback] Underruns, dropouts or crackling sound
UpgradeStatus: Upgraded to focal on 2020-05-02 (693 days ago)
dmi.bios.date: 11/25/2019
dmi.bios.vendor: LENOVO
dmi.bios.version: N23ET69W (1.44 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20KH006LBM
dmi.board.vendor: LENOVO
dmi.board.version: Not Defined
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias: dmi:bvnLENOVO:bvrN23ET69W(1.44):bd11/25/2019:svnLENOVO:pn20KH006LBM:pvrThinkPadX1Carbon6th:rvnLENOVO:rn20KH006LBM:rvrNotDefined:cvnLENOVO:ct10:cvrNone:
dmi.product.family: ThinkPad X1 Carbon 6th
dmi.product.name: 20KH006LBM
dmi.product.sku: LENOVO_MT_20KH_BU_Think_FM_ThinkPad X1 Carbon 6th
dmi.product.version: ThinkPad X1 Carbon 6th
dmi.sys.vendor: LENOVO