ReadyNAS slow over AFP and not working over SMB (even with ReadyNAS app) - MacOSX

Hi guys,

here is my config.

- MacOSX Yosemite on MacBookPro Late 2007 

- MacOSX El Capitan on Imac 21,5 Late 2015

- Modem (Fastweb Italian Company) with 4 Lan ports

- ReadyNAS 104 

- Samsung Smart Tv

NAS is connected to LAN 1

Samsung is connected to LAN 2 (over Netgear AC adapter)

Imac is connected to LAN 3

MacBookPro is connected to wifi

- NAS works great over http and browser but it is slow to connect over AFP and it does not connect over SMB, even using the ReadyNAS app

- Samsung tv works fine (DLNA shares all work great)

- i-Tunes server flag seems to be lost when refreshing page and the i-Tunes library (I've copied to NAS and provided with i-Tunes permission) is never showing up in the choosable libraries (even when mounted as disk through AFP)

How could I make SMB and the app work and use i-Tunes library?

Thanks a lot

77PALE77