Hello,
I have the same problem and the NFS does not function with 1000X3D
I have one Synology 1812+ and one synology 508 and the problem is the same one!
With Synology 1812+:
Without Link Aggr
NFS -> function not and no means of making it function
UPnP -> All is ok, slow to find on the network, but functions.
With Link Aggr:
NFS -> function not and no means of making it function
UPnP -> function not and no means of making it function
For me the problem comes clearly from the 1000X3D
I tested with other Mediaplayer (Popcorn A-200, Popcorn A-300, and 3 models of Dune)
And all functions without problem.
There is only the 1000X3D which does not recognize the NFS and (UPnP - with the Link Agg)
Apparently the service support is not ready to help us with this subject.
As a result I council with my using customer of the NAS in NFS, not to take 1000X3D and their council of the A-300 Popcorn.
It is sad because for the rest the 1000X3D is excellent. It is first Mediaplayer which I see managing all the codec with fluidity.