Hi,
Speedwise for me is similar to what you describe. I did try to order a static ip on their website but that has been pending for several months and I haven't bothered to pursue it as they've sent me two new routers - which they don't seem to want back(I've asked). My line has been drop out free for the last two weeks. The support guy says that Telecom have replaced something on their network, doesn't say what.I've yet to encounter anyone who actually gets a speed of 1 gig which their website implies to be achievable by 50% of their users 
Cheers
Al
Based on the discussion I had with the installer, he suggested that there was a gigabit backhaul link to the cabinet serving the village. If this is true, then it's effectively impossible to ever achieve the headline speeds since you'll only ever get the advertised 1Gbps minus whatever anyone else in the village is actively using (plus the usual ethernet overheads etc).
I don't know if that's totally accurate, although when I questioned it with their support team, they argued:
...to be able to offer you a gigabit fibre connection for just £20 a month, our backhaul costs need to match...
Which to me suggests there might be some truth to that. Although I would argue if you're sharing 1Gbps backhaul when you have ~100 customers connected it, then you shouldn't really be selling a 1Gbps service. They also tried to argue that it was just a peak time thing, although the fact I only get 600-700Mbps at 02:00 in the morning makes me think otherwise. That said, I wouldn't have thought that there was that much idle usage on the network at those sorts of times.
I'm getting around 450Mbps over 20 theads (using the attributes -R -P 20) at this point in the evening to a private iperf3 server I'm hosting in Azure (capable of ~10Gbps in theory). The single thread performance on iperf3 is around 150Mbps though, not sure if that's normal? A single-threaded Speedtest shows a similar result:
https://www.speedtest.net/result/15355255118
Nexfibre are currently rolling out their 10G XGS network in my area, so the optimistic side of me hopes that a decent ISP joins VM as a reseller and I can jump onto that in the future instead.
WeFibre has been good, but I can't say my experience has been anything more than good really, but I guess that's what £20 a month gets you.