Upgraded from 300 to 900, not getting minimum speed guarantee

[#1]

The latest Speedtest CLI result just showed as below. Big jump for me, but still way off the 900 range .

Server: fdcservers.net - Dublin (id: 35422)
ISP: Plusnet
Idle Latency: 23.48 ms (jitter: 0.16ms, low: 23.35ms, high: 23.58ms)
Download: 509.33 Mbps (data used: 876.8 MB)
23.60 ms (jitter: 1.28ms, low: 22.59ms, high: 40.27ms)
Upload: 92.51 Mbps [===================-] 98% - latency: 111.55 ms

[#2]

And ThinkBroadband seems to spike up and down :  

[#3]

@dmurray0 

Reported error - are you running Norton?

[#4]

No, Have the free version of AVG. Also have Surfshark VPN but not connected when running any tests

[#5]

There’s evidence that Norton interferes with certificate processing.  Possibly AVG does the same.

Retry the command, dropping the “s” from the https:// prefix.

[#6]

I wouldn't worry about the curl test, its just an alternative to not using a browser based speedtest. 

For me I've always used speedtest cli and been happy with the results from my FTTC days, some browsers can inhibit the performance of a speedtest.

With the upload speed being around 100 Mbps suggests you are on the 900/100 product but your download speed contradicts this with around 500 Mbps being the maximum achieved.

A thought would be to configure your PC with a PPPoE connection and connect it directly to the ONT to compare speeds.

Instructions here - https://www.digitalcitizen.life/how-setup-and-use-pppoe-internet-connections-windows-10/ 

[#7]

Starts to beg the question of has the right service been provisioned … or configured?

We have seen this before with regrades not “taking” properly on the BT backends, requiring expensive regrades to fix the issues.

@Chris_S  @Peter_JW can you take a look please?  @bobpullen has assisted with similar cases previously.

[#8]

Just tested my laptop plugged directly into the router with the same ethernet cable and hit the full 1Gbps on FAST so problem must be somewhere from within the PC?

[#9]

That is a great diagnostic test…

• Product has been provisioned correctly
• PC can drive 1GB
• That Ethernet cable can do 1GB

The issue is thus either the router or the other Ethernet cable.

[#10]

Router and cables are fine as they can put out the full 1gb. Tried the kids laptop too wired into router with different cables and 1gb is fine. Bottleneck is coming from somewhere within the PC as every speed test on PC varies but well shy of the 1gb.Tried resetting the network in settings but still no joy.

[#11]

@dmurray0 What is the make and model of your 'problem' machine?

[#12]

Here you go John

It's a Dell Optiplex 990
It's a Windows 10 pc with an Intel 82579LM network adapter

There's some anecdotal info out there regarding performance issues of that NIC, although most seem to be regarding running at 100Mb instead of 1Gb which can't be the issue here...

[#13]

@dmurray0 

I think what needs to be considered here is will the missing speed be a problem? This is an old windows 7 PC dating back a few years being released in 2011, windows 10 is now EOL so maybe you'll be considering replacing it soon?

I am also in this position with a Lenovo pc with the same NIC. But for me the NIC is achieving full speed.

maybe consider a USB ethernet dongle as this would have more up to date drivers. 

EDIT In a powershell use this command to detail the NIC driver version

Get-NetAdapter | Format-List -Property Name, InterfaceDescription, DriverVersion, DriverInformation

For my PC
Name : Ethernet
InterfaceDescription : Intel(R) 82579LM Gigabit Network Connection
DriverVersion : 12.17.10.8
DriverInformation : Driver Date 2018-06-12 Version 12.17.10.8 NDIS 6.50

[#14]

Thanks, @MisterW - must learn to check back. . Quite an old machine then, I'm a little surprised it can run W10, but that  is incidental to the reported issue.

[#15]

I've just ordered a USB Ethernet adapter, will arrive tomorrow. Will let you all know how I get on with it. Appreciate your patience and feedback.