I have internet service with Charter and they sent me a modem about 3 years ago. For 6 months, the modem keeps auto shut off and get back on like a few second after that. They sent a technician and he told me the cable to my room is torn up, so he switched the modem to the other room where cable is fine; however, the modem is still auto shut off and back on. I play game and have terrible ping spike. So is it the modem problem or the provider problem? Thanks.