So slow since few days
For the last 3 or 4 days, the connection is very slow with NextDNS activated. I tested by deactivating NextDNS and it is faster. What is the reason for this?
Here is the report I made: https://nextdns.io/diag/1a6b4050-4458-11ec-8d8f-f3ed7980806d
I did some tests, and the slowness was only occurring in Firefox, not in Safari.
So I made a new installation of Firefox, uninstalled the NextDns application and configured IPV6 in the system configuration of macOS Catalina. Still the same problem...
whereas before everything was fine, and I didn't change anything in the meantime. That's strange...
Could be related to the network bugs pre-Monterey. Apple fixed something in Monterey that previously made any other browser than Safari slow when using DNS that blocks domains via 0.0.0.0. But I think that was mostly an issue on Big Sur when users had another network extension installed, like Little Snitch. Not sure about Catalina.