Here are some round-trip plots and statistics from Wireshark. I collected these while playing Blue in Green from Miles Davis’ Kind of Blue. This is a 24-bit, 192 kHz download from HDtracks.
Again, I don’t understand why there would be a correlation between lower endpoint latency and subjective sound quality, but Silent Angel at least does what they claim to do regarding network performance. And, VitOS does sound better to me, for whatever reason. 