Consistently slow speeds for fibre

[MattOfBelfast]

Hi,

I'm on the BT Full Fibre 900 plan which I believe guarantees a 450Mbps download speed.

Unfortunately, I've noticed  not hitting that connsistently. I've actually went as far as measuring the speed periodically since june (see graph below, the red line is 450Mbps):

note: measurements done by a server directly connected to the BT router with an ethernet cable, taken every 5 minutes using the speedtest cli (https://www.speedtest.net/apps/cli).

Is there anythig tnat can be done to help? BT's own test tools just say that everything's fine.

[pippincp]

How are you connecting, wired or wireless?

[MattOfBelfast]

connected by ethernet (cat7) directly to the hub

[licquorice]

What speed do you get if you bypass the hub and make a direct PPPoE connection from your PC to the ONT?

[MattOfBelfast]

I can't say I've done this before, are there some instructions I could follow sorry?

[licquorice]

In Windows10, go to Settings > Network and Internet > Dial Up > Set up a new connection > Set up a broadband or dial up connection to the internet > Next > Set up a new connection anyway > Broadband (PPPoE) > enter username bthomehub@btbroadband.com and password BT, press connect.

Unplug the WAN Ethernet lead from the hub and plug it into your PC.

[MattOfBelfast]

thanks, I'll have to try this tomorrow but i'll reply here again.

[MattOfBelfast]

So I removed the ethernet cabel used for the WAN connection from the back of the hub, and used that same connection for PPoE.

doing a quick test on speedtest.net got me a much better speed (see attached screenshot).

replacing the cable into the hub and trying again but this time from a machine connected to the hub got me much less:

> speedtest-cli
Retrieving speedtest.net configuration...
Testing from BT (81.157.4.213)...
Retrieving speedtest.net server list...
Selecting best server based on ping...
Hosted by Opti-Fi Limited (Douglas) [105.20 km]: 21.695 ms
Testing download speed................................................................................
Download: 237.21 Mbit/s
Testing upload speed......................................................................................................
Upload: 87.74 Mbit/s

So it seems like the hub isn't able to provide the same speed to a machine connected directly to it by ethernet?

[licquorice]

Have you tried a factory reset of the hub? Remember to turn off Smart setup again afterwards.

[MattOfBelfast]

I've done a factory reset and turned off Smart setup. Unfortunately it's the same behaviour.