Mac Pro 8-core running Cubase 6 64-bit
5 external PCs running VE Pro servers
All static IPs on a closed, dedicated gigabit switch.
Each PC is set to Jumbo frames (9K MTU)
When the Mac is set to 9K Jumbo frames, I get stuttering and big audio-over-LAN issues.
When the Mac is set to normal 1500 MTU, audio-over-LAN streaming is almost flawless.