I wondered if someone can clarify something for me

We moved into our new house in December - the pre-install line report from Chorus stated line attenuation of around 15db, which should have given us a good VDSL speed

VDSL then installed with master splitter and line attenuation was then measured to be 22db with speed of around 18mb/s (seems to be inline with the distance from the local exchange) - after 2 months of use and latency spikes and chatting to a few knowledge people here, we opted to change to ADSL, expecting slightly lower speed but a more stable line.

After a month of ADSL - we're getting less than 1/2 the speed (measure 7mb/s this morning) and line attenuation of around 33db. Latency still spikes - and we're also getting the line dropping out all together almost on a daily basis, just for 5 to 10 minutes. The latency is a real problem as my son & I both game. Best we've seen is around 56ms which is acceptable, but the bulk of the time (day and night) latency is in the 300-500ms range, with frequent (every 5 to 10 minutes) latency hitting 600-800ms which just kills online gaming.

So I was wondering, does ADSL & VDSL operated at different frequencies and the attenuation we're seeing really isn't comparable - i.e. just because we were seeing 22db with VDSL doesn't mean we should expect the same with ADSL??? Or should we expect the same level of attenuation, in which case something has degraded my line quality further?

Why was the pre-install line report from Chorus showing a significantly cleaner line? I've asked my IP twice but they've straight out avoided answering the question.

Meanwhile, I'm looking at going back to VDSL as although it wasn't great ADSL is proving to be worse :-(

thanks

Phil

p.s. I really miss my 200mb/s fibre and <5ms latency at my last place :-(