Mac Mini Stopped Loading Webpages

Heres the deal:
I have a late 2012 mac mini. OS X Yosemite. 10.10.1 I've had it connected to the same Comcast wireless modem for several months without issue. The past couple days the mini stopped loading webpages. It's like the internet is really slow. Sometimes it will load a page after several minutes. The internet/network works perfectly fine all all other devices in the house. Speed tests at 15Mb/s download on my phone. But heres the weird part, my Mac Mini works well when I wirelessly tether my phone's LTE to the computer, it loads webpages just fine. I've tried Chrome and Safari. I tried unplugging all the USB/Firewire cables from the back. I can't turn bluetooth off because of my mouse and keyboard.
Any ideas?
Thanks,
Dean

Hold down the option key and select the Wi-Fi menu in the menu bar. What values are shown for the following?
          PHY Mode
          Channel
          Security
          Signal/Noise or RSSI
          Transmit Rate
Please do not post the BSSID, as that information is private.
Now hold down the option key again and select
           ▹ System Information... ▹ Network ▹ Wi-Fi
Compare the two-letter Country Code with the ISO code for your country. Does it match? The code X0 means that the country couldn't be determined. The code X3 means South America, not otherwise specified.

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