I've been on Home Starter Fibre since 18 Feb. Around 600m from the cabinet.
Not lost sync once. IP Profile solid at 38717/10000.
Latency, watch my live BQM link in my sig over the next few days, or give me a couple of sites to ping. I'm on the Stepping Hill exchange.
Note that the peak/off-peak times apply at the weekend as well as in the week. Uploads are not counted.
There is a bit of congestion for a while after midnight when the heavier downloaders start up - you can see the packet loss and latency rise on my BQM. Download speed at those times can fall a bit. Hard to say how much, as I had some bad ones that I have discovered were my wireless link from downstairs playing up, but still got 6Mbps-8Mbps. When I got the same during the day I went and checked wired and got over 35Mbps!
Generally speeds are 32Mbps-36.5Mbps. I don't do many speed tests on this allowance - the BT one uses about 160MB and the tbb one up to 90MB!
Next time I'm awake soon after midnight I'll run a test from near the router so 130Mbps wireless. Wired may be difficult but perhaps.
I believe if the congestion started to spread to important times then capacity would be added.