[PROBLEM] Glitches in Spotify

[gntng]

startup log:

Code:

pi@moode-whz:~ $ moodeutl -l
20230403 000946 worker: --
20230403 000947 worker: -- Start moOde 8 series
20230403 000947 worker: --
20230403 000947 worker: Successfully daemonized
20230403 000948 worker: Boot config backed up
20230403 122253 worker: File check (OK)
20230403 122306 worker: Session vacuumed
20230403 122306 worker: Session loaded
20230403 122306 worker: Debug logging (OFF)
20230403 122307 worker: --
20230403 122307 worker: -- Audio debug
20230403 122307 worker: --
20230403 122307 worker: ALSA cards: (0:b1 | 1:Headphones | 2:sndrpihifiberry | 3:empty
20230403 122307 worker: MPD config: (2:snd_rpi_hifiberry_digi | mixer:(PCM) | card:2)
20230403 122307 worker: ALSA mixer actual (PCM)
20230403 122308 worker: ALSA PCM volume set to (amixer: Unable to find simple control 'PCM',0)
20230403 122308 worker: --
20230403 122308 worker: -- System
20230403 122308 worker: --
20230403 122314 worker: Host      (moode-whz)
20230403 122314 worker: Hardware  (Pi-B+ 1.2 512MB)
20230403 122315 worker: moOde     (8.3.0 2023-03-14)
20230403 122315 worker: RaspiOS   (11.6)
20230403 122315 worker: Kernel    (5.15.84+ #1613)
20230403 122315 worker: Procarch  (armv6l, 32-bit)
20230403 122315 worker: MPD ver   (0.23.12)
20230403 122315 worker: CPU gov   (ondemand)
20230403 122315 worker: USB boot  (not available)
20230403 122315 worker: File sys  (expanded)
20230403 122315 worker: HDMI port (Off)
20230403 122316 worker: Sys LED0  (On)
20230403 122316 worker: Sys LED1  (On)
20230403 122316 worker: --
20230403 122316 worker: -- Network
20230403 122316 worker: --
20230403 122316 worker: eth0 adapter exists
20230403 122316 worker: eth0 address check (Off)
20230403 122316 worker: IP addr (192.168.0.127)
20230403 122317 worker: Netmask (255.255.255.0)
20230403 122317 worker: Gateway (192.168.0.1)
20230403 122317 worker: Pri DNS (192.168.0.1)
20230403 122317 worker: Domain  ()
20230403 122317 worker: wlan0 adapter does not exist
20230403 122317 worker: --
20230403 122317 worker: -- Software update
20230403 122317 worker: --
20230403 122317 worker: Automatic check (Off)
20230403 122317 worker: --
20230403 122317 worker: -- Audio config
20230403 122317 worker: --
20230403 122317 worker: MPD conf update skipped (USB device)
20230403 122317 worker: ALSA card number (2)
20230403 122318 worker: MPD audio output (snd_rpi_hifiberry_digi)
20230403 122319 worker: Audio formats (S16_LE, S24_LE)
20230403 122319 worker: ALSA mixer name (PCM)
20230403 122319 worker: MPD mixer type (fixed 0dB)
20230403 122320 worker: Hdwr volume controller not detected
20230403 122320 worker: ALSA output mode (Direct: hw)
20230403 122321 worker: ALSA loopback (Off)
20230403 122321 worker: Reset renderer active flags
20230403 122321 worker: CamillaDSP (off)
20230403 122321 worker: CamillaDSP volume sync (off)
20230403 122321 worker: --
20230403 122321 worker: -- File sharing
20230403 122321 worker: --
20230403 122321 worker: SMB file sharing (Off)
20230403 122321 worker: NFS file sharing (Off)
20230403 122321 worker: --
20230403 122321 worker: -- MPD startup
20230403 122321 worker: --
20230403 122326 worker: MPD started
20230403 122326 worker: MPD accepting connections
20230403 122327 worker: MPD output 1 ALSA Default (On)
20230403 122327 worker: MPD output 2 ALSA Bluetooth (Off)
20230403 122327 worker: MPD output 3 HTTP Server (Off)
20230403 122327 worker: MPD crossfade (off)
20230403 122327 worker: MPD ignore CUE files (yes)
20230403 122327 worker: --
20230403 122327 worker: -- Music sources
20230403 122327 worker: --
20230403 122327 worker: USB sources
20230403 122328 worker: No drives found
20230403 122328 worker: NAS sources
20230403 122328 worker: None configured
20230403 122328 worker: --
20230403 122328 worker: -- Feature availability
20230403 122328 worker: --
20230403 122328 worker: Input select (available)
20230403 122328 worker: Input (MPD)
20230403 122329 worker: Output (snd_rpi_hifiberry_digi)
20230403 122329 worker: Bluetooth (available)
20230403 122330 worker: AirPlay renderer (available)
20230403 122330 worker: Spotify renderer (available: started)
20230403 122330 worker: Squeezelite (available)
20230403 122330 worker: RoonBridge renderer (not installed)
20230403 122330 worker: Multiroom sender (available)
20230403 122330 worker: Multiroom receiver (available)
20230403 122330 worker: UPnP renderer (available)
20230403 122330 worker: DLNA server (available)
20230403 122330 worker: GPIO button handler (available)
20230403 122330 worker: Stream recorder (available: not installed)
20230403 122330 worker: HTTPS-Only mode (n/a)
20230403 122330 worker: --
20230403 122330 worker: -- Other
20230403 122330 worker: --
20230403 122330 worker: USB volume knob (Off)
20230403 122330 worker: USB auto-mounter (udisks-glue)
20230403 122330 worker: Saved MPD vol level (0)
20230403 122330 worker: Preamp volume level (0)
20230403 122331 worker: MPD volume level (0) restored
20230403 122331 worker: ALSA volume level (None)
20230403 122331 worker: Auto-play (Off)
20230403 122331 worker: LocalUI (Off)
20230403 122331 worker: Automatic CoverView (Off)
20230403 122331 worker: On-screen keyboard (Off)
20230403 122331 worker: Library scope (all)
20230403 122331 worker: View reset to playback
20230403 122331 worker: Maintenance interval (360 minutes)
20230403 122331 worker: Screen saver activation (Never)
20230403 122331 worker: Session permissions (OK)
20230403 122332 worker: Mount monitor (Off)
20230403 122333 worker: Watchdog started
20230403 122333 worker: Ready

I tried different Spotify settings without real improvement.
Everything is default, except for bitrate. The default setting (160) seems to improve a bit, but not that much. And I don't want to reduce bitrate, that is not an acceptable solution.

Code:

Audio format
Bitrate 320
Format S16(Default)
Dithering Automatic (Default)
Volume control
Volume curve Logarithmic (Default)
Volume range 100
Initial volume 100
Volume normalization
Normalize volume No
Method Dynamic (Default)
Gain type Automatic (Default)
Pregain 0
Threshold -2
Attack 5
Release 100
Knee 1
Other options
Autoplay No

Greetings,
Gernot