streaming will greatly depend on your network and what protocol you use
samba (aka windows shares) is very slow
NFS is a much better option
read bottom of page 2 & 3 of this thread for some actual throughput test with info on the hardware used as well
additional, just recently, I replaced my router with an ASUS RT-AC66U
wireless 2.4 ghz bandwidth throughput to SMP is 110 Mb/s using NFS, I did not bother to test Samba throughput
