Windows 10: Extremely low network speed problem

I'm using Windows 10 Pro. My Internet speed is very low. I've had a very reliable and knowledgeable COX cable senior technician to my home for almost two full days. The signal coming into my home is a little over 100 Mbps. However, only three feet from the router, it drops down to 20 Mbps or lower. The technician tried everything including five brand new routers - all with the same result. The modem was also changed five times - all brand new and of different brands. The signal coming into my modem is constant at a little over 100 Mbps. There is nothing more he can do. There are no obstacles between the router and my computer. I also have tried several other computers with the same poor results. So I present this serious problem to this forum for help.

:)

 

Slow Network speed

Hi Andrew,

I realize the inconvenience you are experiencing with the Internet speed.

I will certainly help you.

I appreciate you efforts in troubleshooting the system issue.

I suggest you to please follow the below steps to fix the network issue:

• Press Windows logo key + X key, and select
  Command prompt (Admin).
• Type netsh winsock reset and press
  Enter.
• Type netsh int ip reset and press
  Enter.
• Type ipconfig /release and press
  Enter.
• Type ipconfig /renew and press
  Enter.
• Type ipconfig /flushdns and press
  Enter.
• Restart the system after performing above steps.

If the issue still persist. Please refer to the link to
fix network connection issues in Windows 10.

https://support.microsoft.com/en-us/help/10741/windows-10-fix-network-connection-issues

Please reach back to us, if you still face the difficulty with Network speed. We will be glad to help you.

Thank you.

 

Network speeds drastically reduced overnight.


Issue:Overnight my download speeds have dropped drastically on this PC. Other devices show typical speeds of 65 Mbps down and 10 Mbps up. This PC is showing roughly 5-7 Mbps down and 10 Mbps up on 5 GHz network and around 25 down and 10 up on my 2.4 GHz network. This is consistent over multiple tests and browsers of course.

Info:

• Windows 10-1511 Build 10586.164
• No firewall/AV enabled (Windows Defender disabled in GPEdit.)
• Linksys WMP600N Wireless adapter (802.11 b/g/n Dual band).
• D-Link DIR-850L router (802.11b/g/n/ac Dual band).

What I've tried/checked so far:

• Malwarebytes turns up nothing on full system scan.
• Task Manager / Resource Monitor shows nothing is using network out of the ordinary.
• Tried 4 different WLAN driver versions with the same results no matter which is installed.
• Ran TCP/IP stack reset (netsh i i r r).
• Reset winsocks (netsh winsock reset).
• Flushed DNS.
• Restarted PC.
• Powercycled router/modem.

Attempting Ethernet would be extremely challenging and I'm 99% certain this is specific to the WLAN adapter. Any suggestions or ideas would be greatly appreciated.

 

LAN Network Slow speeds


update, problem fix with the following. Thanks 100MB/s on large files