[Quartz] UAudioComponent->PlayQuantized(...) does not work as intended

Hi,

I try to call PlayQuantized, then the sound gets played but it is not aligned on the beat.
I get a log message “LogAudioMixer: Warning: Quantization Clock: ‘Uniquexyz’ Does not exist.”

The quartz clock handle is valid and i can get its GetBeatProgressPercent() but no matter what i do sound aligned to beat is not working. i even do not use the name but provide the handle itself.

Maybe important: The Audio component was created with UGameplayStatics::CreateSound2D.

Does anybody have an idea?