Thank you for all the replies. Now it's pretty much the dead of night I've run a few more speedof.me tests, results attached here: https://cl.ly/3a1T281w4643 https://cl.ly/1p0b1O442F0y https://cl.ly/0l342v0c0N0c

This evening the speeds dropped to as low as 15 Mbps so it seems to be getting worse.

Hopefully someone from Openreach will pick up the fault tomorrow!

In reply to a post by Brookzy:

Thank you for all the replies. Now it's pretty much the dead of night I've run a few more speedof.me tests, results attached here: https://cl.ly/3a1T281w4643 https://cl.ly/1p0b1O442F0y https://cl.ly/0l342v0c0N0c

This evening the speeds dropped to as low as 15 Mbps so it seems to be getting worse.

Hopefully someone from Openreach will pick up the fault tomorrow!

Just did a test on my BT connection and got >> this << yours should be near my speed.

Have you tried the speedtest on here?
https://www.thinkbroadband.com/speedtest

Paul

Yeah I wish I was getting that!

The speedtest does not look typically indicative of congestion, but more end-user setup e.g. WiFi and/or the device in use.

Congestion usually displays a huge gap between the AVG TBB Download and AVG HTTPx6 Download. You do have a gap, but not as large as I would expect with congestion.

Have you raised the issue with BT Consumer? The good news is congestion to this scale (if indeed congestion) is rare, and where it does exist they usually resolve it. On the FTTP lines we do see more speed slowdowns, just due to the headline speeds being that much higher, not to your extent though typically.

https://speedof.me/show.php?img=180514021240-7545.png

https://speedof.me/show.php?img=180514021858-5699.png



Well that's an improvement! Let's hope it stays that way.

ukhardy07 - there's a fault already logged with BT, I am waiting for them to contact me about an engineer no-show on Friday.

In reply to a post by zzing123:

From your initial SpeedOf.me plots, there are two major takeaways:

1) Saw-toothing. This is the main 'fault'.

I don't understand why the saw-toothing is an issue when the speed test is downloading different sized files consecutively. It's what I would be expecting. Also being singe-threaded the results can be lower that other speed tests.

Brookzy

That looks like a VLAN size change and is around the right time span too. The system is only likely to resize in steps so you may find in increases again in a week or so time.

The difference between the single and Multi thread at that time of night may also indicate a limit within your computer. It may be that each core is only capable of a speed lower than your service max, this is fairly common when you get a high speed service but doesn't bother most people as they want the speed for multiple devices rather than pure speed to one device.

People with 1Gb services need high spec devices to reach anywhere near the full speed on one device as Disk write and CPU issue start to effect tests.