Happening every night for a few weeks now.
Starts around 6-7pm, usually back to normal 2-3 hours later. But particular bad tonight.
Cloudflare DNS seems unaffected (NZ traffic), seems to be mostly Aussie (and Singapore?) traffic.
Edit: Latency also goes back to normal (well, even lower than normal NowNZ), when I connect to a NZ VPN.
Google DNS 22.214.171.124
Cloudflare DNS 126.96.36.199