Yes. It is fine in the morning. Do you have Xfi (control your devices with sleep modes for kids or anything?). I do and somehow it is controlling my ethernet main frame computers (2 of them). They do not have wireless capability so I do not know why they are shutting dwon. No one at Comcast knows what to do.
I feel you, I have this same issue in Somoma CA and they send a technician days later who say the same thing, "it's working fine". It's clearly some software issue and I think they are throttling when you use servies like YouTubeTV, etc.