Fibre 900 speed

I recently upgraded to BT full fibre 900. Since install, speed only reaches 600/650. BT tests from their end show no problems. I have a Realtek 2.5GBe card and have tried a few optimum settings that I found online but speed still down. I have used thinkbroadband, BT wholesale, Fast, Ookla testers, all with similar results.

Often or not these problems are the machine running the test rather than the internet connection.

Have you tried testing with another device - ideally try with a different OS/platform - like Linux/Mac if testing using Windows?

In reply to a post by tmarsh12345:

I recently upgraded to BT full fibre 900. Since install, speed only reaches 600/650. BT tests from their end show no problems.

Assuming you are on windows, which third party security/AV tool have you installed, and have you tried removing this and using Windows Defender alone? You should get to the 900 Mbps easily.

Is this using the supplied BT Smart Hub 2 ?
Upload Speed ?
Machine spec ? - As to use broadband this fast, you need a NIC with hardware offload - have you tried using the onboard ethernet card as opposed to the 3rd party one ? (the internet will not max a 1Gbit ethernet connection).

In reply to a post by teeerex:

As to use broadband this fast, you need a NIC with hardware offload - have you tried using the onboard ethernet card as opposed to the 3rd party one ?

Wot? I've used the maximum 942 Mbps on gigabit ethernet between my PCs and other devices (e.g. NAS) for years, when broadband was upto 16 Mbps on ADSL2+

Connect the BT Smart Hub 2 they provided.
Login to your BT account online and run a speed test.

It runs a speed test direct to a tester built in to the BT hub that rules out all of your devices, wired and wireless.
It's 100% the best test you can run.

If that shows low speed then the problem is the line/BT.
If it shows full speed then the issue lies in something beyond the Hub, i.e your kit.

After that people could advise further on diagnosing your kit but let's work out if your hub is receiving the full speed 1st.

I've recently tried getting a Speed Test via logging in to my BT Smart Hub 2, only to get the response that the facility is no longer available.
BT went on to say that Speed Test is available through the BT App, so I downloaded that to my iPhone and was able to run the full test and see the results. I don't know if the equivalent App is available through the Android App Store.

Edited by dtinstaffs (Sat 21-Jan-23 17:45:19)

Just tried through the router and it said the same, web based speed test no longer available.

However, tried the test through the My BT app. It ran the test and gave results both for the speed to the hub and the speed to the device. Speed to the hub showed 947/119 so pretty much there (other devices are on the network and in use so not surprised it isn't higher). Device speed was much lower as connected through wireless but it does suggest the test does show the raw speed of the connection from the hub.

the OP has specified they are using a 3rd party 2.5G card - has it been setup correctly, what is their cpu speed and has the hardware offload been enabled on the card, otherwise it WILL struggle to reach gigabit speeds if it has been disabled. Just because your setup works out the box - doesn't mean the OP's will - thus the questions and asking the OP to try the standard 1Gig port - as I agree 100%, it 'should' work without any issues.

In reply to a post by teeerex:

the OP has specified they are using a 3rd party 2.5G card - has it been setup correctly, what is their cpu speed and has the hardware offload been enabled on the card, otherwise it WILL struggle to reach gigabit speeds if it has been disabled.

20 years ago with a thinkpad T41 using a Pentium M CPU, I could easily manage 940 Mbps over a GigE port, with no such thing as hardware offload. A misconfigured 2.5 GbE card should dump load on the CPU, but any CPU in the last 10 years should be able to handle GigE surely?

We aren't talking 10 or 40 Gig here.