Hi all, I have a Dlink DNS 323 nas which I want to store all my 4k .mkv movies so I can stream them on my HTPC. the nas is connected to my 100Mbps network. If I put a Western Digital Red 5400PRM HDD in there, would that cause any buffering/studdering? they guy at the store said 5400RPM vs 7200RPM wouldn't make a difference because the bottleneck is the 100Mbps network speed. Is this correct?