I’m experiencing the same problem that was recently covered (but not definitively solved) in
It is really baffling to me. It is only affecting my MacBook Pro (running Catalina), on all browsers. I’ve tried enabling/disabling IPV6, changing the DNS server, and even tethering through my phone.
There are no proxies configured in system settings.
This appears to be a recurring issue, judging by other posts here–it is frustrating that DreamHost hasn’t done anything about it.