Windows 10: Windows 10 possible bug for Gigabit ISP connections for main network device ?

Hello everyone,


I am super frustrated with this topic as my main problem is that I have a Gigabit connection and is not working as expected on Windows 10 normal boot. I am starting to think that this is a new recent bug but I was not able to find anything related to this... FYI I sometimes reach 1010 Mbps, so my ISP is not the problem and you will see why.


So the issue is, as I stated, that my Gigabit network does not reach even 400 Mbps on my Windows 10, current hardware and software info:

• OS: Windows 10 Pro
• Version: 20H2
• Build: 19042.630
• CPU: i9 9900x
• OS installed on a Samsung NVMe M2 960 PRO 512 Gb
• Motherboard: Asus ROG x299 e-gaming it can handle 1 Gbps and it comes with integrated AC WiFi
• My router: Asus ROG GT-AC5300

Things I have tried even all together:

• Shutting everything down on my network
• Shutting everything down on my PC processes
• Doing a fresh install format 100%
• Changing network cable from CAT5 to CAT6
• Connect directly to Modem
• I tried changing Bandwidth Reserve on Policy Manager
• I tried the CMD auto tuning thing
• I tried turning off Automatic Proxy
• I tried turning off IPv6
• I tried turning off Large packets or something like that
• I think more things but it will not matter you will see why

Things I have tried that seems to show different results on the same OS and PC and this is why I think it is a new Windows 10 bug:

• I also have dual boot Ubuntu 18.04 + Ubuntu 20.04 and both downloads mostly everything and instantly at 110 Mb/s 950 mbps
• I have tried using my Wifi connection I have previously said my motherboard has a Wifi connection too and it starts downloadingsame thing at higher speeds, ethernet uses approximately 300 mbps, and Wifi on status says 840 Mbps connection, I get download speeds of 600 Mbps - 500 Mbps when downloadingsame thing.
• I boot my windows on safe boot with network and I instantly have 950 mbps on my downloads but on normal bootNOT
• I have tried a fresh install using latest windows ISO tool, and when I started using it, I tried downloading something that I know will get me max speed and I got same 300 mbps speed, changed tosafe boot with network again and I got 950 Mbps again...

So, this is clearly not a configuration thing nor a driver problem as I have the latest driver from the motherboard support page and makes no difference on normal boot but makes a difference on safe boot...


So, what do you tell me to do ?


I am 99% sure this is a bug or something like that because when I turn off my ethernet from network panel and starts using Wifi, the speeds goes instantly up, but if I go back to Ethernet, I get this problem on normal boot again... As I mentioned before, I also tried changing the Reserve bandwidth on the Policy manager, and it made no difference...


What else can I try ? Again, remember that on safe boot with network orusing other OS or changing main connection from wired 1 gbps to wifi 840 mbps gives me all speed or 3/4 of it...

:)

 

Windows 10 Ethernet connection randomly disconnects

I suggest checking out the event log in Windows. It's likely going to tell you why (to some degree,) why the network connection was lost. I haven't had this issue with wired connections but, with wireless it has almost always come down to drivers or a strange software bug which boiled down to how the driver operates.

 

What is this network device?


This is a weird problem I've been seeing in windows for years now (not just windows 10). I've been unable to figure out what it is, but we're not alone in this, I did some research a while back and a lot of other people were seeing it as well.

Some suggest it's a bug in the network stack. Some suggest it's neighbors who are connecting somehow, but not able to use the network. Regardless, it's not an uncommon problem and doesn't seem to be anything worry about. Here's some examples:

Solved Strange phones in network - Windows 10 Forums
Strange phones listed on Network heading

 

Slow Gigabit Network

I recently did the same thing, but my router is 100Mbps, so everything goes to the switch, and then the router also gets connected to the switch. I have no NAS, but transfers between both machines in my place run as fast as the mechanical hard drives will allow.

I'd say the problem might be in the NAS.

I just googled up your NAS model:
Specifications
Standards
• IEEE 802.3 10Base-T Ethernet
• IEEE 802.3u 100Base-TX Fast Ethernet
Support Hard Drive Type
• SATA*
Ports
• 1 10/100/1000 Gigabit Ethernet Port

Compare this to the DNS-323:
Specifications
Standards
• IEEE 802.3 10 Base-T Ethernet
• IEEE 802.3u 100Base-TX Fast Ethernet
• IEEE 802.3ab 1000Base-T Gigabit

In other words, it seems like your NAS is simply not capable of 1Gbps speeds, despite it listing a 1Gbps port - It doesn't list the 1000Base-T as a supported standard. This might be due to a lack of processing power inside the box.