For a few months I ve been struggling with Comcast cause my Netgear C6900 modem is not getting even closer to 150 Mbps, which is the plan we are paying for. Today a tech guy came to check the wiring and ended up doing a whole new wiring. He then did some testing with my router and one of Comcast's and we were getting good speed. After half an hour, speed dropped down to usual again, between 30 and 50 Mpbs down. I was hoping the new wiring would solve the issue, but now, I dont know what else to do.
Can anybody explain what seems to be the problem ?
PS: I made sure this modem is Comcast compatible before buying it
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