Just done a speed test on TBB and speed was usual 14.8 mbps down but latency was up from 40 to 78ms. Most of the sites I visited still took 2 - 3 seconds to display. No faster, no slower than usual.

Why in your case does a fraction of a second make a difference to pages loading?

I'm usually interleaved (winter rain effect) so get 21ms minimum ping to bbc on any gateway :-/

I used to switch a bit between interleaved and not (usually not); which brought me to 28ms pings on BT.

Soon after moving to PlusNet a neighbour's tree work brought down my line. Opereach replaced it all the way to the top of the house and down to the old junction box. My modem connection graphs have looked very boring since and I don't seem to have too much risk of interleaving. I am on PlusNet 40/20 with a sync speed of over 70Mbps; I wish I could increase my target SNR to make the line even more stable still; my attempts so far (unlocked HG612) have failed.

You can't alter the SNRM on FTTC with the Openreach modem for some reason. I had several goes when I first unlocked mine. You can technically change it, but it screws your connection. It doesn't work like it does on ADSLx.

The other make modem/routers seem to be able to do it. However, SIN 498 expressly says this should not be done.

Interesting, thanks for that.

In reply to a post by StephenTodd:

I'm usually interleaved (winter rain effect) so get 21ms minimum ping to bbc on any gateway :-/

I used to switch a bit between interleaved and not (usually not); which brought me to 28ms pings on BT.

I was pretty much always interleaved on BT as I was installed mid Sept, and it rained that week and so I was interleaved for 18months apart from the odd week. However when I joined plusnet they migrated me and reset everything so I started on 40/10 and support quickly kicked me onto the 80/20 profile which gives me 56 download and nearly 10up. I had 4 months of not being interleaved until the rain arrived, then it came and went, came and went, and eventually in Nov its stuck now. Maybe in the spring I'll get fast path back

The 40/20 option was new after I signed up, and wouldn't help me, as the openreach is still the 80/20 profile.

I am on PlusNet 40/20 with a sync speed of over 70Mbps; I wish I could increase my target SNR to make the line even more stable still; my attempts so far (unlocked HG612) have failed.

I wouldn't try - this isn't ADSL and you don't want the DSLAM in the cabinet applying a limited profile to your line.

You can achieve a similar effect by limiting the sync speed.

In reply to a post by BatBoy:

You can achieve a similar effect by limiting the sync speed.

You've probably mentioned that before; where you can tell the modem to limit the speed it will negotiate and the DSLAM accepts it as part of negotiation, so you get higher SNR margin and thus higher tolerances. Clever.

I dunno if I did but I believe the HG612 supports the appropriate command

1 - each gateway has multiple endpoints, so a single endpoint could get congested and other endpoints still ok so not entire gateway affected,

2 - having contention ratio higher than 1:1 does not mean congestion is inevitable.

In reply to a post by BatBoy:

You can achieve a similar effect by limiting the sync speed.

I had the same question as jchamier, how?
A google search on 'hg612 limit sync speed' comes up with
http://forum.kitz.co.uk/index.php?topic=14262.50;wap2

The new firmware performance of the vdsl/adsl side is the same as before. If you willing to manually limit the HG612 sync speed down to a value not a lot more than the speed you would get on interleaved the HG612 you should maintain fastpath in most cases. Using e.g. "xdslcmd configure --maxDataRate 64000 16000 100000" and aiming for a snrm of about 8-9 rather than 6 reduces my error rates by about a factor of 4-5.

I haven't time to check this out right now (weather too nice outside, and tax forms to fill in) but looks promising.