Danraka,
I had my router set for Google DNS's 8.8.8.8 and 8.8.4.4 and was disconnecting every other TP last night. It comes and goes here, so hard to pin down. And like many on the US West Coast, I have fiber FIOS right to my local router, and a very solid broadband connection with Frontier.
Anyway, I changed to OPENDNS LLC servers, since they were the fastest of Steve Gibson's benchmark. Will see if it makes a difference over next few days. So far no failures, which means nothing yet as I get the disconnects usually more often later in the evening, or early morning here.
I did notice one of the Google DNS IPs had an error listed during the benchmark test, and I was getting connect failures to the secondlife.com site earlier today - when on Google DNS.