Ethernet Freezes

[Bray90820]

I am hear using mavericks with an Asus Z87-1 Motherboard on which has a Realtek 8111GR, Gigabit LAN port and when it's under heavy load the system hangs and i need to completely restart the computer

 

[nivv]

I am hear using mavericks with an Asus Z87-1 Motherboard on which has a Realtek 8111GR, Gigabit LAN port and when it's under heavy load the system hangs and i need to completely restart the computer

What does the log say in the app "System messages"?

Many people get this message a couple of times before ethernet freezes:

2014-06-22 08:56:54,000 kernel[0]: failed to getphysicalsegment in outputPacket.

I'm also on Z87 and I get the above message, although I have an Intel NIC. Try some different Network-kexts from the latest MultiBeast.