@Shanling not at all. Seems completly random to me, but definitely more on delayed side. I'd say 95 times delayed 5 times not. Also when it's not delayed only lasts for some time. Even if I somehow swallow delays, it will stop transporting music randomly, and you have to disconnect and plug it back again.
It's definitely not problems with my USB ports, every other device works flawlessly, also there is no power saving option enabled. I don't understand why you are acting all surprised while asking about this when really some people already reported delay issues before. My case shows they it is indeed possible for M0 to deliver sound over USB with low delay, but pc drivers/software are problems.