I messaged Xfinity and I get the same issue.. nothing's wrong with Internet.. ok then why am I getting only 400mbps.. I pay for 1.2 and I'm not even getting 500.. for all that I should just pay for what I am getting.. anyone no how to help me fix my problem
Solved
slow speed internet connection on S33
Best answer by SURFboard Moderator
S33 model is compatible with the xfinity speed plan so you can try chancing the device to check the speed on your modem. since this is just a cable modem you can check the optimal speed of your modem by connecting device to the modem directly without router. If still slow speed issue persist we need to check the cable signal level on the modem interface so just follow the steps mentioned on the below article to work on the case further.
http://arris.force.com/consumers/articles/General_FAQs/S33-Cable-Signal-Levels
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