My internet is throttled to 200 mbs on gigabit service, please help.

[wolfie2132]

I have a windows 10 PC with a wired internet connection and gigabit service from AT&T. If I do any speed tests, the maximum speed I can attain is 200 mbps. If I take the same exact Cat 6 cable from the back of my computer and plug it into my windows 7 laptop, I get 900 mbps. I thought maybe this meant that I had a bad network card so I replaced it with a rosewill gigabit PCIe lan card that is confirmed to work with win 10, same speed.

I have tried the following:
-Changed Cables
-Changed Ports on the modem
-Updated drivers
-Disabled Autotuning
-Changed Speed and Duplex from Auto to 1 Gbps full duplex

I can't find anything that is throttling it program wise either.

I am running windows 10, rosewill RC-411 network card, Asus M5A99Z EVO motherboard, 16 gb ram, 6 core 3.3 GHz AMD FX-6100 processor.


Any and all help will be greatly appreciated.

 

[bill001g]

What happens if you take your win7 laptop and plug it into the internet

 

[wolfie2132]

What happens if you take your win7 laptop and plug it into the internet

My windows 7 laptop gets ~900 mbps up and down using the same cable as my windows 10 pc. I think this rules out the cable and modem as working correctly and points towards something with my win 10 pc. I am out of ideas though.

 

[bill001g]

Did you transfer using a direct cable between the pc and the laptop or did your go though the modem. It should be the same.

200m is such a strange number. I could see if it was 100m maybe some strange port negotiation problem.

Gig ports always run at 1g speed. The 200m number is some average over time value. If for example you transmitted data for 2 second and then did not transmit data for 8 seconds your average rate over 10 seconds would be 200mbit.

This has to be some form of software limitation. There must be something it sees as different between the transfer to your win7 machine and the server on the internet. It could be in your router but that would be unlikely. It would have to be in the QoS part of the setting. Make sure nothing is set there.

Maybe it is the testing tool. There is a very old tool called IPERF. It is really used to test inside a lan but there are public iperf server.

I am at a loss to guess...I will blame some hidden feature in win10 just because I dislike win 10

 

[wolfie2132]

Did you transfer using a direct cable between the pc and the laptop or did your go though the modem. It should be the same.

200m is such a strange number. I could see if it was 100m maybe some strange port negotiation problem.

Gig ports always run at 1g speed. The 200m number is some average over time value. If for example you transmitted data for 2 second and then did not transmit data for 8 seconds your average rate over 10 seconds would be 200mbit.

This has to be some form of software limitation. There must be something it sees as different between the transfer to your win7 machine and the server on the internet. It could be in your router but that would be unlikely. It would have to be in the QoS part of the setting. Make sure nothing is set there.

Maybe it is the testing tool. There is a very old tool called IPERF. It is really used to test inside a lan but there are public iperf server.

I am at a loss to guess...I will blame some hidden feature in win10 just because I dislike win 10

Thanks for the help. The rating I am using for speed is based on speed websites like speedtest.net, fast.com, and the ATT uverse speed test. I have performed those tests with ATT modem connected to laptop and received 900mbps but when I disconnect the same cable from my laptop and connect it to my desktop, it maxes out at about 200 mbps.

 

[bill001g]

I see I thought you might have a tool and had tested directly between your laptop and the desktop. Even simple file sharing copies of a large file will give you a pretty good indication of speed in the network tab in the resource monitor. I would leave both machines connected to the modem just to make the file sharing simpler rather than having to manually setup ip addresses.

You can also use iperf between your desktop and laptop if you want but a file copy will not require installing anything.

 

[wolfie2132]

I see I thought you might have a tool and had tested directly between your laptop and the desktop. Even simple file sharing copies of a large file will give you a pretty good indication of speed in the network tab in the resource monitor. I would leave both machines connected to the modem just to make the file sharing simpler rather than having to manually setup ip addresses.

You can also use iperf between your desktop and laptop if you want but a file copy will not require installing anything.

Thank you, I will try this to get an idea of speed. It still doesn't answer why my internet speed is so slow on my win 10 desktop compared to my win 7 laptop.

 

[bill001g]

Key will be to see if it is just internet or traffic in general. All I can think of is there is some bandwidth limitation based on the ip address. I know you can block things with the win firewall but I don't think it can limit traffic.

Key is to determine if you need to be looking for something strange in the router or in the pc. If it works between the machines in your house then it is the router if not then it is the pc. Still what exactly it is I do not have a clue.