You should try out Google DNS based on the above report #ClickMe
It should help to get sorted with these private addresses. You have to set Google DNS @your Router to make it work for the whole config (HomeNetwork) otherwise you can also only set it @your WirelessAdapter/Card
Your settings should look as following (if via WirelessAdapter/Card)
Using either way will automatically instantly route the DNS traffic via the google servers. I have run a couple of performance tests and it does increase your overall performance. However, some people might be worried that google "saves" your information but I would better be off having my WebInfo @Google since I'm using Google/Youtube on a daily basis and they already know everything to know about us.
After you have done the above, run the test again and post ahead the new results.