Getting less then 10mbps on a 1gbps LAN with 100mbps internet speeds

Jonnodude · 19 Jun 2019 at 19:00

Hi,

For some reason my laptop (Dell Inspiron 7577) has been lagging out when it comes to streaming videos online, so I ran a Google speed test and it is only getting under 10 megabits per second:

When I run the same Google speed test on my smartphone (Note 8) I get 87 megabits per second, so the issue must be with my laptop.

I have tried all the obvious things such as updating drivers, rebooting my router, etc - but it always stays the same.
I have tried the speed test using both ethernet cable (Cat6) and the WiFi adapter (Dual Band AC) but I still get the same result.
When I check the Network performance in the task manager it fluctuates between 4mbps and 10mbps.

I have obviously googled the issue and most people blame a faulty ethernet cable or faulty NIC, but I know the cable isn't the issue as the WiFi on the laptop has the same result.

Does anyone know what could be causing the issues, and can anyone advise any steps I could take to fix this?

Many thanks in advance!

Jon

Stephanie Peterson · 19 Jun 2019 at 19:14

Checking the link speed in the drivers tab? make sure its on auto detect.
Does your laptop have a link light, orange/green thing? These can signal the link speed (ie 10/100) between different colours.

That however does not relate to the wireless... so.... prob something else.

First thing, different browser... suppose you have done that already.
Have seen virus checkers doing wierd network related things in the past, i would disable all active virus checking SW while doing tests.

In fact booting windows in safe mode with network support is the best bet, if it doesnt come up with problems there then is some driver or application being loaded thats the prob.

Jonnodude · 19 Jun 2019 at 19:16

I didn't actually try a different browser! I will try that shortly.
I actually cancelled my Kaspersky subscription the other week and it's been slow since then... I will also try disabling that too.

Thanks for the quick reply, I knew I was overlooking something!

bledd · 19 Jun 2019 at 19:17

Is your WiFi disabled when you check speed with ethernet?

AV software?

Hard drive dying?

ChrisD. · 19 Jun 2019 at 19:19

Looks like link speed of the adapter has negotiated to 100 Mbps.

VaderDSL · 19 Jun 2019 at 19:19

If you type kaspersky slow internet there are quite a few people reporting slow down on their internet connection. Kaspersky even have a section on their support site that states as much. It'll be the real time scanning of the network traffic.

https://support.kaspersky.co.uk/general/products/9042

Stephanie Peterson · 19 Jun 2019 at 19:20

Thats what i thought first but that would not bring the wireless down with it.

Saw Nortons do something like this nearly 10 years back, other weird driver and startup related guff as well hence safe mode/w NW support is best for diagnosis.

Jonnodude · 19 Jun 2019 at 19:47

Ok so...

I used a different browser (IE, rather than Chrome) and that didnt make a difference.

I made sure my duplex was set to Auto (it was).

I disabled my AV - no change.

I rebooted into safe mode with networking and got 108mbps download! Eureka!

However I guess I don't really know what the issue could be as I have rebooted out of safe mode and now I'm back down to < 10mbps! Booo!

Any ideas what I should do?

Many thanks.

Stephanie Peterson · 19 Jun 2019 at 19:52

Ok then that actually helps a lot, rules out completely physical and off pc issues.

First off load up the startup manager. on win 10 its ctrl-alt-del then task manager then startup tab.
You will have a list of apps, pop them all off right now, reboot and see what happens, if you go back to full speed then its one of them so switch them back on until you find the 'tard.

There are other stuff we can look at but try this first.

Caged · 19 Jun 2019 at 19:52

Assuming Windows 10, type "network reset" into the search box and run it

Jonnodude · 19 Jun 2019 at 20:03

I disabled all my apps on startup then rebooted - no change.

I have also run the Network Reset, but that also made no change (in fact the first time I ran the test I was down to 5mbps, but it went back up to 10 the 2nd time).

I also followed a guide online to optimise my network adapter (before the network reset) to ensure there were no power saving features enabled - but this didn't help either.

ChrisD. · 19 Jun 2019 at 20:09

What speed is the adapter connecting at in network control panel?

Jonnodude · 19 Jun 2019 at 20:11

It's connected at 1.0gbps according to that.

ChrisD. · 19 Jun 2019 at 20:17

Then it's AV interfering.

Jonnodude · 19 Jun 2019 at 20:19

I currently dont have an AV running - have completely removed Kaspersky.

Stephanie Peterson · 19 Jun 2019 at 20:20

There is still non microsoft services to disable, applications on boot is just one side of the problem - in fact services (most usually not MS ones) are usually to blame.

Stephanie Peterson · 19 Jun 2019 at 20:21

type msconfig in the runbox, it will open the old msconfig window
click services and then hide all microsoft ones - as 99% of the time its not an MS service

Disable them all like the apps list, reboot ect..

Steveocee · 19 Jun 2019 at 20:22

ChrisD. said:
Looks like link speed of the adapter has negotiated to 100 Mbps.

Then he'd get 100Mb not 10Mb.

Jonnodude · 19 Jun 2019 at 20:23

Stephanie Peterson said:
type msconfig in the runbox, it will open the old msconfig window
click services and then hide all microsoft ones - as 99% of the time its not an MS service

Disable them all like the apps list, reboot ect..

MSCONFIG just tells me to open task manager and there is no option to hide windows services.

Stephanie Peterson · 19 Jun 2019 at 20:37

Version of windows?

It should open a dialog box with General/boot/services/startup/tools.
Did task manager have a services tab in it when you did the applications ?