I was having alot of difficulties with connecting my playstation to the 1.1.1.1 public DNS server.
Random disconnects, DNS errors, …
Using DNS server of other providers does not give any issue
I’ve got the same problem. Using your purge cache tool helps for a while but the domain entries for playstation.net reset to empty results shortly after.
For us, it has been wired connections through and ASUS router with Merlin firmware. IPv4 and IPv6 configured. Works then for an hour or so then disconnects.
Strange thing: even when using 1.1.1.1 as secondairy dns. I have the same time outs.
Completely reconfigured DNS on the ISP modem. seems to fix it for now.
FYI, I also had DNS problems with my PS4. Today (not sure when this started), I’m having problems with the DNS feature of Firefox using CloudFlare name servers. It looks like a more generic problem with CloudFlare name servers. Good luck