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Windows Server 2012 R2 - Slow Network Performance Troubleshooting

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I am having really slow network performance using Hyper-V on Windows Server 2012 R2.

 

1) I am using Broadcom NetXtreme Gigabit network adapters.

2) I have five Virtual machines that are using a single virtual switch that is hooked up to a single Gigabit NIC and these machines are not generating that much traffic.

 

3) This was not a problem when I was using Windows 2008 R2, only a problem when I reformatted from scratch and installed Windows Server 2012 R2.

 

4) When I ping the host OS (hyperv3), I can getting lots of latency (200ms), but when I check the network traffic over that, I am only getting (2.4 megabits upload and very small download rates).  I am using Remote Desktop to connect, so that makes sense.

 

How can I troubleshoot this where this wasn't a problem before, but now it is?  The OS has changed, the network cables and ports have not changed.   Here is a screenshot showing my network info.

 

Can you help me troubleshoot the network performance issues?  Thank you guys :)

HyperV3 Network Details (Windows Server 2012 R2)



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