Caches cleared; no improvement.
This maybe related, from comp.risks:?
Re: Very old news. A Chrome feature is creating enormous load on global root DNS servers (RISKS-32.24)
“John Levine” <johnl@iecc.com>
25 Aug 2020 22:51:29 -0400
>A Chrome feature is creating enormous load on global root DNS servers
Someone hasn't been paying attention. The ICANN Name Collision report written seven years ago in 2013 said the exact same thing:
https://www.icann.org/en/system/files/f ... g13-en.pdf
See section 5.4.3 on page 48. At that point the Chrome random names were 46% of all root server traffic (see table 12 on the previous page.)