X1 cable goes out multiple times a day

My X1 cable TV has been going out multiple times a day. I have an XG2v2-P box. The screen goes black and sound cuts out for a few minutes a couple times a day randomly. I usually get error code RDK-03033 "can't connect to the internet..."

I don't have even have internet with Xfinity or any type of cable internet. I currently have Verizon FiOS. Does this cable box require Xfinity internet? Does it require any internet connection? I'm getting tired of dealing with this as it's been happening for months.