Some web sites are terribly slow on one machine

[Macro Device]

The sitch is as follows:

• We are connected to the interweb via the ethernet cable that's running through our router.
• All machines in our household have no problems except for my PC. It's connected via cable.
• Since two days ago, my PC has significant trouble working with some web sites (such as google.com, vk.com, avito.ru etc), bandwidth seems okay but ping is just ridiculous, up to 30 seconds. Sometimes these sites work flawlessly. I am yet to figure out the system behind this. This happens regradless of browser.
• I already completely deleted my network drivers and installed them again. I uninstalled WIndows updates that might've caused this but this changed nothing.
• Changing DNS servers doesn't affect the behaviour.

I'm terribly injured so I can't replace the cable and get my USB stick back so I could run a different OS to rule out the OS problem.

Is there a way for me to rule one or another out without replacements? What else should I add?

 

[kilo]

Is the problem computer network speed fast when transferring files on your LAN?

 

[Macro Device]

I have no idea how to transfer files this way. Any guide that even a complete idiot like me (= ZERO respective education) can comprehend?

 

[Solaris17]

iperf3.

iPerf - Download iPerf3 and original iPerf pre-compiled binaries

iPerf3 binaries for Windows, Linux, MacOS X

iperf.fr

one one machine open a command prompt where the iperf3 executable is and start it in server mode (receiving)

C:\iperf\iperf3.exe -s

On the other machine (the bad one) start iperf3 and point it at the "server" (good PCs) IP.

C:\iperf\iperf3.exe -c 192.168.1.20

Docs:

iPerf - iPerf3 and iPerf2 user documentation

iPerf3 documentation - measuring TCP, UDP and SCTP bandwidth performance

iperf.fr

from here we determine if its the LANs fault, be it your network or the machine.

From there we do a speed test to see if its a WAN problem.

If the WAN speed during a speedtest is fine or the same as the "good" PC, then the problem is likely software.

Since you mention sites "loading slow" assuming all else is good I would assume DNS.

IF THAT doesnt seem to help or its the same as the "good" PC then you are diving into software or OS issues starting with NIC drivers.

 

[Macro Device]

Eh, bros are asleep. Will do that tomorrow.

 

[kilo]

Windows to Windows:
Open file explorer
Navigate to \\<ip address of computer 2>\c$ . E.G. \\192.168.0.10\c$
Use the administrator username and pw of the computer 2 at the prompt.
Drag and drop from computer 1 to computer 2.

Windows to linux:
Install WinSCP (easiest method)
Connect to the Linux machine using the ip address, username, password (does not have to be a sudoer)
Highlight a folder
Click download button

Linux to linux:
Use scp <source folder> <username remote computer>@<ip addr of remote computer>:<full path>
E.g. scp -r /home/myusername/documents admin@192.168.0.10:/home/yourusername/documents/

My recommendation is to use a very large file like 5GB or more first, then small files. That'll take enough time to see weird activity on 1 gig ethernet, which maxes out at about 116 MB/s (big B)

 

[Macro Device]

1 gig ethernet

I'm capped at 100 Mbps. The router can't go higher than that.

Will test it tomorrow.

 

[Bill_Bright]

It would be good if you could use a different Ethernet cable - even if, for now, it runs across the floor and becomes a serious tripping hazard. At least you would be able to determine if your cable is the problem - or not. . At the very least try a different port on the router.

Clearly, if the other computers have no problems with those site, the problem is on your end.

 

[_roman_]

Did you mention which browser you use? Does this happen with every browser? 10 different browsers i tried and recently some behave differently. Ignore system optinos and other flaws

 

[Macro Device]

Does this happen with every browser?

It does.

Edge, Chrome, Firefox, Brave, Zen, all five exhibit the same behaviour.

 

[_roman_]

• Changing DNS servers doesn't affect the behaviour.

What i saw recently. Browsers ingore many settings form the host. And call it secure browsing, secure dns, dns over https and other nonsense. They are hostile to the base system.

You may start to read at "DoH: How do I disable DoH?" https://librewolf.net/docs/faq/

Personally I would test with a browser which is not hostile. very hostile google-chrome and microsoft-edge // firefox i use for something else to separate important passwords and data from the rest

Note: My viewpoint as of now. RFC were made by intelligent people which worked very well for many years.

-- My windows 11 pro is able to use my samsung galaxy A52s 5g in usb tethering mode. Personally I would disable wlan and ethernet in windows 11 pro. than use for a short time period the smartphone tethering mode with the data cable connected to the usb port to check if the problem is browser related (i think), network related (highly possible), operating system issue (need to crosstest with something else) or network related (smartphone works well, ethernet not -> bad)

I think you can also switch mobile data to wlan on the smparthone in usb tethering mode.

ofc all the network specific checks should be done also

 

[Red Hood]

Sounds like a corrupt NIC driver, hardware fault with NIC or worn ethernet cable

You said you already deleted your NIC driver (I assume from device manager?) Did you use the latest driver from Gigabyte/Realtek website?

 

[Macro Device]

You said you already deleted your NIC driver (I assume from device manager?) Did you use the latest driver from Gigabyte/Realtek website?

Positive for both.

How do I disable DoH

Disabled it but it's still not responsive enough.

 

[Count von Schwalbe]

Have (can) you try Wi-Fi?

USB Wi-Fi adapters are quite cheap over here, not sure about Russia.

 

[lexluthermiester]

I'm capped at 100 Mbps. The router can't go higher than that.

This could be part of the problem. Make sure all of the devices connected to that router are syncing to 100mbps or whatever WIFI speeds are appropriate.

 

[Macro Device]

This could be part of the problem. Make sure all of the devices connected to that router are syncing to 100mbps or whatever WIFI speeds are appropriate.

This has never been a problem before. Nothing has been changed in configuration, why would it start impacting my experience now?

USB Wi-Fi adapters are quite cheap over here, not sure about Russia.

My budget as of now is an absolute zero so best I can do is USB tethering. Lemme try that out.

Welp, it's not better than over the cable. Apparently something is wrong with my software.

 

[lexluthermiester]

This has never been a problem before. Nothing has been changed in configuration, why would it start impacting my experience now?

I've seen stranger things. It was only a suggestion..

 

[Macro Device]

For some reason, it works fine again in Chrome but not in other browsers. WTF?

 

[Frick]

For some reason, it works fine again in Chrome but not in other browsers. WTF?

Time to scan that machine for shit man.

This has never been a problem before. Nothing has been changed in configuration, why would it start impacting my experience now?

This is just an aside, but that is how hardware failures work.