Question slow internet on one computer

[computerdoom]

I recently tried a speedtest on my main PC and found out that it was getting 30Mb/s vs what it should be getting from my ISP, 300 Mb/s. I tested both my ethernet and wifi, and they're comparable. I don't know when this started.

(The ethernet and wifi adapter are separate BTW. I built this PC with a Z170 Krait Gaming Motherboard and then added a wifi adapter through a PCI-e slot.)

I tried the same cable and ethernet port on a different laptop and it got 190 Mb/s. WiFi was around 100 Mb/s in the same area. I tested my >12 year old laptop with the same setup and even it got 300 Mb/s!! My phone and ipad get 200-300 Mb/s in the same area, but they are newer.

I tried reinstalling the drivers with no change. I checked for updates and there aren't any. Running my PC in safe mode doesn't make a difference.

I tried these commands with no change:
netsh int ip reset
netsh winsock reset

I'm running out of things to check to figure out why it's so slow and going crazy!!! I don't think it's a hardware issue since my wifi and ethernet are both slow, and use different hardware, so I think it's a software issue somewhere, unless there's a basic motherboard issue, but I don't know what the software issue could be.

Any ideas?

Ethernet adapter: Intel(R) Ethernet Connection I219-V

Wifi adapter: Broadcom 802.11ac Network Adapter

 

[Tech Junky]

don't think it's a hardware

Rule it out by booting from a Linux USB and test if it's HW or an OS issue.

 

[computerdoom]

i got >360 Mb/s when i used a linux usb vs ~30 Mb/s when i retry it on windows

 

[Tech Junky]

windows

So, then what version of Windows are you using?

 

[computerdoom]

windows 10.

 

[Tech Junky]

It's odd that both adapters are being slow since they're not both Intel or the other.

Intel has a we site for driver assistant that will scan for updates.

The other thing you might want to search for is patch Tuesday and grab the latest cumulative patch as it might knock something loose and get the speed up.

Beyond that maybe run the w11 upgrade assistant and see if it resolves the issue. If you want to you can rollback to 10.

 

[computerdoom]

intel says i don't need any updates.


i'll look for the windows 10 update, but i can't upgrade to windows 11 because my motherboard/cpu aren't supported.

 

[In2Photos]

Did you reinstall the drivers by uninstalling, then installing? Where did you obtain the drivers? What are the DNS and gateway information for Windows vs Linux? Any difference?

Someone on here mentioned a program called TCP Optimizer helped them?

https://www.reddit.com/r/Starlink_Support/comments/m8tx2b/speedtest_on_linux_vs_windows_why_so_slow

 

[In2Photos]

Another response I saw said to use this command: netsh int tcp set global autotuninglevel=normal

 

[computerdoom]

THAT DID THE TRICK! HALLELUJAH!!!

TCP Optimzer was the fix.

Thanks!!!