I have a play back delay problem using a USB Cable on Rpi3..
I have cheaper USB that plays with 4 seconds between tracks.
When i try the 'Posh' expensive USB cable (here on demo),
it turns into 30 + seconds between tracks! (sounds better though!)
I am using Rpi3 to USB/SPDif converter to a DAC. Picoreplayer and LSM.
Squeezebox app on iPad/iphone to control..