Gigabit Ethernet Running Slow

Aug 2, 2018
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Hi
I have a gigabit ethernet switch and 200MB internet connection.
I can reach the 200MB speeds from an iOS device connected to my wifi.
I can reach the 200MB speeds from a Microsoft SurfaceBook with a Gig-E USB3.0 ethernet dongle.
If I take that cable that I used to reach 200MB via the USB ethernet dongle on my Surface and plug it into my workstation PC, I only reach ~100MB internet speeds .
If I take the Gig-E USB 3.0 dongle and attach it to the problem workstation (in a USB 3.0 slot), I still only see ~100MB internet speeds.
So, only this one PC is showing me slower speeds than I expect to see.
It is running Win10 Pro.
The PC shows both connections as gigabit connections/full duplex.
I've turned off all power saving features, and disabled the QoS/packet scheduler features on my NICs.
Nothing seems to give me anything close to the expected speeds for me on this machine.
I have yet to look into the BIOS to see if some setting there is limiting me, but I don't expect to see anything there.
What could I be missing that is holding my speeds back?
 
Solution


Yes, I should have said bits not bytes.

The problem was software-related. I spun up a bootable Ubuntu USB on the machine in question and hit 200mbps. I decided to reload Win10 Pro on the box, and now it’s getting the desired speeds. I wish I knew what got hosed up in the original build, but it was definitely software-related.

For the record, prior to these steps, I uninstalled/reinstalled my adapter (I219-v), tried uninstalling/reinstalling with a freshly downloaded Intel driver, and tried the gigabit USB adapter. Some software I had loaded or some setting in the OS was throttling me. A clean install fixed it...
Aug 2, 2018
2
0
20


Yes, I should have said bits not bytes.

The problem was software-related. I spun up a bootable Ubuntu USB on the machine in question and hit 200mbps. I decided to reload Win10 Pro on the box, and now it’s getting the desired speeds. I wish I knew what got hosed up in the original build, but it was definitely software-related.

For the record, prior to these steps, I uninstalled/reinstalled my adapter (I219-v), tried uninstalling/reinstalling with a freshly downloaded Intel driver, and tried the gigabit USB adapter. Some software I had loaded or some setting in the OS was throttling me. A clean install fixed it right up.
 
Solution