My home network is connected via Motorola cable modem to Cox ISP. My client is Win 8.1. I am experiencing slow DNS lookups which is adding 30-40 percent to my Web page load time on busy commercial pages.
I have verified correct (per ISP) DNS responder settings, and checking with Gibson's DNSBench indicates they are working and performing well (i.e. low average and max lookup times.)
But I still get 4-5 second individual site lookup waits, even on things like google.com and amazon.com. I even get "server not found" errors on such sites.
My wife, on the same network also running Win8.1 BUT NOT NORTON 360, doesn't s\seem to have the problem.
Is Norton 360 doing some extensive checking on the calls to the DHS servers? Is there some trust or other firewall setting I can do to eliminate the delay?