Hi,
I've only had fibre installed for 2weeks (new customer).
I'm getting consistent quality issues in the evenings, with gaming lag & disconnects. If I do a connection check from my Xbox One it says anywhere from 20-50% packet loss! As far as I know this test to xbox live is international traffic, not local. My Xbox is port forwarded from the modem (NF4V).
It seems to only happen during the evening during a window of about 830pm-1030pm for international traffic. Other time periods will usually net a close to zero% packet loss. There is also a higher ping during this time.
I was initially thinking that it could be a shoddy line installation by chorus, but have since disregarded this since will seems to work fine outside of 'peak' hours :-/ 

Testing I have done so far:
- Isolation test, plugged in directly to the modem with a different cable, removed everything else from the network.
- Ping test from PC. Ping international site such as google etc. 100x 32kb pings will usually net approx. 2x lost pings during peak. It's only 2%, so not as bad as the xbox one, but should I be getting any at all...?
- Ookla speedtest, always comes back with good results (for a local NZ test).

Question:
I never had this packetloss at my previous house, connected to Vodafone ADSL. The only conclusion I am able to come up with at the moment is that the unlimited plan and/or ISP data management could be being harmful to my gaming experience?
Does anyone have any constructive advice, or experience to offer please? I'm wondering if the next step is to move off an unlimited plan for gaming to see if it make a difference?

Thanks for reading :-)