Hello . For the past 2 weeks my internet has been going from 116 down to 9 down then up and down between the two. One or 2 days ok but now it is over 2 weeks . You call customer support they want to restart your modem , which i have done more than once. I have also put in place a router between the modem and the internet that did nothing same results. What;s going on with comcast ?