DSD 128 from NAS stuttering

[jordanhuai]

Finally, I found the problem. A broken lan port 2 (or may be the ethernet cable)cause pi running 10Mbps link all the time. Change to port 3 and a new ethernet cable, It is running at 1000Mbps as it should. DSD128 & DSD 256 are running smooth. I still don't understand why cat5e cable and gigabit ports give me 10Mbps link. LOL. Thanks a lot of for helping me out!