BT Home hub 3 / Bufferbloat

Until today I'd never heard of bufferbloat, but I've been troubled by slow Web pages, and increasing 408 errors, messages saying either my browser does not provide a response in time, or web page not responding.
Today, my speed test shows bufferbloat down as F, up as B. I've never seen that before. F would seem to be the worst possible measurement!

I've got a BT Home Hub 3 on Infinity connection.

Test results

Extract from Helpdesk Information page of router
1. Product name: BT Home Hub 3.0B
3. Firmware version: V100R001C01B036SP05_L_B. Last updated 24/11/13
13. Firewall: Default
15. Software variant: 05_L_B
16. Boot loader: 1.0.37-106.5

Can I did this myself through the admin section of the HomeHub3 Web page, or some other way, or is it time for a newer router, and if so, is this an issue that will get me a free update from BT or will I need to pay?

Edited by Fellwalker (Fri 11-Sep-15 10:59:40)

Officially weird.

So I logged in to TBB, and started to run the test again, it is a completely different layout and has come up with a different results page
Results when logged in

This test tells me I may have an RWIN problem.

Both tests done on Samsung Galaxy tab s 8.4 running Android 4.4.2. Dolphin Browser with jetpack and flash enabled.

When repeated on my laptop, that issue no longer shows. If I log out, I get the speedtester that I first saw on my tablet. The New Version shows me Bufferbloat, which is (on my laptop) A down and B up, so that is the best and second best. The link that I can post from the results page does not include this bufferbloat; in fact the results page looks like the OLD results page, nothing like the new one.
laptop results page not logged in
laptop results page on TBB

When repeated on my tablet, the RWIN issue with low download speed on IPv4 remains, until I log out! Then I get what it calls the new version of the test, and it shows 89ms latency but this time Bufferbloat is B down and A up.
tablet speedtest showing bufferbloat

Two different testers. If logged in and we see flash is present we run that version.

If you don't upload a lot at the same time as downloading then buffer bloat is not worth worrying about.

The rwin messaging is only present in the flash based tester

Thanks for replying. Flash is enabled on both tablet and PC, so I'd expected same tester whether logged in or not.

Whilst I don't regularly upload and download at the same time, I do get many problems with Web sites not responding or giving 408 or unavailable messages. 99% of those load ok on refresh. Is that a bufferbloat issue, or something for a different section of the forum?

Unavailable messages is nothing to do with buffer bloat

If you want to force the flash tester use
http://www.thinkbroadband.com/speedtest/speedtest2.html
If you want to force the non flash tester use
http://labs.thinkbroadband.com/speedtest

In reply to a post by MrSaffron:

Unavailable messages is nothing to do with buffer bloat

If you want to force the flash tester use
http://www.thinkbroadband.com/speedtest/speedtest2.html
If you want to force the non flash tester use
http://labs.thinkbroadband.com/speedtest

Thanks. Very helpful. My investigation continues.