That's normal. Been happening to me for a while. My TV signals constantly cut in and out
T3/T4 errors are like flat tires. Common, but still a problem and each case is caused by something different. Isn't your issue related to outages in your area?
I suggest making a post with technical data on your problem. Your last one was locked because the moderator thought you were asking for credit or talking about billing, which isn't allowed here. In your new post, include;
What model modem/gateway do you have? How does the coax get from the street to that modem? Splitters/amp/filters? Can you show signal levels?
