[PROBLEM] Tics when playing high-resolution PCM files

[zOr7gA8]

Hello,
when I play hires PCM files
I hear occasional but very annoying "tics".
It happens with some 24/96, 192 and 352 Khz flacs.
On 352 flacs they are more frequent.

I suspect the issue is due USB lags
on external HD, or on USB dac.
I have Moode 8.1.2 64 bit on RB 3B+, connected to a topping DX5 usb dac
and external USB 1 TB 3.5 disk.

no errors in moode.log

1 - I don't remember if "underrun" messages are reflected in moode.log. Have you also examined the MPD log /var/log/mpd/log?

2 - have you tried the simple test of copying several files (the ones most likely to cause 'tics') from the external drive to the SDCard, updating the library, and then playing the files from the SDCard? (You could also disconnect the external drive after copying the files if you want to be really thorough but I'm not sure it adds anything to the test.) 

Regards,
Kent

tx

I tried from SD tics seems disappeared...
so HD is not enough fast, or USB HD conflicts with USB DAC,
since they share same bandwidth ...
I am waiting availability of Raspberry 4,
in the meanwhile what can I do ?

maybe connect the HD to another device which can be access point as NAS server!?