Hi @Eric,
I tested with 4 Macs and a Dell over the weekend and this was the setup.
Time Warner Cable intenet - 125Mbs speeds
Cable modem was an Arris TG1672G set to bridge mode
one CAT6 cable from Arris to the Netgear gigabit switch model GS105
Netgear connects with CAT6 to:
MACs or PC
NAS Box - Synology DS412+
microRendu
microRendu connects to Chord DAVE
Using MACs, I tried 4 different OS versions from 10.7 to the latest 10.11
With each, the MACs were all clean installed, thus removing all other 3rd party processes (that I know of)
(Note: My testing lengths are based on 30 minutes runs of each file format type, ie 44.1, DSD64, etc)
Most 44.1 tracks played smoothly with all versions of OS on all MACs.
DSD64 mostly played smoothly on all MACs as well.
DSD128 played with some dropouts using MAC with OS 10.7 and improved with 10.10 and 10.11.
DSD256 have long pauses with 10.7, 10.9 and shorter pauses with 10.10, just dropouts with 10.11
DSD512 does not play on any MAC with any OS version. Just pops and noise.
Running Parallels with MAC OS 10.11, Roon running as Roon Windows played DSD128 files without dropouts and DSD256 with very few dropouts. BUT, with most DSD256 tracks, the beginning 2 seconds had noise. I tried restarting the same DSD256 track, I get that starting static or noise every time.
On an Dell XPS, also Intel i7 the results were similar to the MAC running Windows 10 on Parallels.
I ran Windows 10 on a MAC using boot camp and the results were similar too.
I did try putting the DSD tracks on the MACs, on internal SSDs, inside the NAS BOX as well as on external SSD drive boxs connected to MACs directly or to the NAS box directly.
In the case, where the DSD tracks were externally connected, the dropouts and pauses were more frequent.
The best results (less dropouts, less static and less pauses) were when the SSD tracks were stored internally with the computers.
Please let me know what else you need to help make this work for my system.
Thanks Eric
Paul