is dune and the nas on the same switch ??
try these test files and see how far you can go untill you get problemshttps://www.larmoire.info/jellyfish/think i played 200Mbs no problem
I use NFS with no issues.NFS is, in my experience, slightly more efficient.Can you monitor network traffic on your NAS web interface?
sounds like your network is 10/100 !!!
One of the cables could be cat5.You need at least cat5e for 1Gbps.
lol i was just thinking after 5 months its finaly sorted and all the time it was his network