Slow Network or Internet Download and Read Speeds using Intel Network Adapter

You may find that Network and/or Internet speeds are very slow when using an Intel Network Adapter.

This appears to be an issue with the Speed and Duplex settings, after a Driver update or installation you may notice that the Speed and Duplex is set to 100 Mbps Full Duplex.

100 Mbps Full Duplex

 

 

 

 

 

 

 

 

 

 

When running a LAN Speed Test it only reports a Read speed of 5 Mbps and Internet Speed tests also report terrible Download rates.

LANSpeedTestSlow

 

 

 

 

 

 

 

 

 

 

Upon changing the Speed and Duplex setting to Auto Negotiation the issue is resolved

Auto Negotiation

 

 

 

 

 

 

 

 

 

LAN speed test and www.speedtest.net results after making this change both indicate the issue is resolved

LANSpeedTestFixed

speedtestresult

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