PC slowing down internet

[Lavalump]

Hi I've had this issue for a few weeks and it's gotten worse. Web pages take ages to load from 3 seconds up to at least 20.

I'm unable to pinpoint the issue, but when my PC is connected to the network it has slowed down everything. Done speed tests and they show normal speeds and ping. I've used WiFi and ethernet both have the same problem. Used my phones hotspot and issue still persists which points to the PC itself. I've run Windows defender and Malwarebytes, nothing comes up with either.
The only thing that's changed is I added a NVME and changed RAM from 4x8GB to 2x16GB. I've removed the NVME in case it was using to many PCIe lanes but that didn't help.
Looking in Task Manager nothing is using the network that is unfamiliar either.
Just need some direction that could help me find something before formatting.

Specs
MSI PRO Z-790 DDR4 WiFi
I5 13600kf
Was using a 1080ti up until a week ago now a 4070ti Super
32GB DDR4

[Eigenvektor]

Does it take a long time before websites start to load, or does the loading itself take a long time? Since speed tests are normal, I suspect it's the first, rather than the second option. In this case it could be an issue with the DNS server you're using, rather than the network connection itself.

 

If you're currently using the DNS service provided by your ISP, maybe try switching to 1.1.1.1 (Cloudflare), 8.8.8.8/8.8.4.4 (Google) or 9.9.9.9 (Quad9). It could be your ISP's DNS server has a problem and the start of these issues simply coincided with your hardware change and has nothing to do with it at all.

 

If you're unsure, check the output of

ipconfig /displaydns

 

You can also try something like

nslooup linustechtips.com

see whether that takes a long time.

[Lavalump]

45 minutes ago, Eigenvektor said:

Does it take a long time before websites start to load, or does the loading itself take a long time? Since speed tests are normal, I suspect it's the first, rather than the second option. In this case it could be an issue with the DNS server you're using, rather than the network connection itself.

 

If you're currently using the DNS service provided by your ISP, maybe try switching to 1.1.1.1 (Cloudflare), 8.8.8.8/8.8.4.4 (Google) or 9.9.9.9 (Quad9). It could be your ISP's DNS server has a problem and the start of these issues simply coincided with your hardware change and has nothing to do with it at all.

 

If you're unsure, check the output of

ipconfig /displaydns

 

You can also try something like

nslooup linustechtips.com

see whether that takes a long time.

Ok I am very certain it was the DNS after looking, it came back with a lot of fitgirl sites that were not associated with the https://fitgirl-repacks.site
I must have had a lapse and used the incorrect one recently. Using Google DNS has improved it a lot but still feels a little slower than normal.
How would I go about clearing that out so it's not trying to connect to these servers?

[Eigenvektor]

16 minutes ago, Lavalump said:

Ok I am very certain it was the DNS after looking, it came back with a lot of fitgirl sites

So what exactly did you change, and what is trying to connect to these sites? How are you testing this?

 

If your computer connects to that site without you actively entering that address and it's not an ad, it sounds like some kind of DNS hijack.

[Lavalump]

9 minutes ago, Eigenvektor said:

So what exactly did you change, and what is trying to connect to these sites? How are you testing this?

 

If your computer connects to that site without you actively entering that address and it's not an ad, it sounds like some kind of DNS hijack.

The image is a snippet of what comes up when using ipconfig /displaydns that's what leads me to believe it could be the issue. I haven't been redirected to any sites. 

I changed the DNS to 8.8.8.8 going through Control Panel\Network and Internet\Network Connections to the DNS settings on TCP/IPv4
I got a new modem/router yesterday that does not use a generic password. (was replacing anyway regardless of this issue I'm having)

Sorry about being a bit dumb about this, I've never been good on the networking side of computers.

[Sawa Takahashi]

11 hours ago, Lavalump said:

How would I go about clearing that out so it's not trying to connect to these servers?

Running Malwarebytes Anti-Malware should help.

But I you got any important info on that computer (accessing your email, banking accounts, etc.) I'd simply backup and then reformat. Then install a fresh Windows.

You can't never be sure 100% that you flushed every malware on your system so the nuke option is the one I recommend. I know this is more work but this also is very important data to protect.

Have a nice day !