Internet drops multiple times between the hours of 11am est. and 4pm est.

My internet is only going down from about 11am est to about 4pm est multple times a day anywhere from 7 to 15 times   . The router will reset and takes about 2 minutes for the internet to be restored. The router has been replaced and lines tested. Xfinity has been out and replaced my modem with a new one and it seemed fine for a day and has started back up every day this week. I have another appointment tomorrow. I am in a somewhat remote area and have not had any issues the past 4 years. I see a ton of logs from the firewall blocking ports and event logs see below. Xfinity is coming back out tomorrow to do more trouble shooting! Nothing has changed on my network in over a year and this problem started about two weeks ago after a day of brownouts and power outages. I know the time thing sounds crazy but after 4pm we normally have no issues and I stay up till about 11:30pm to 1am watching tv etc... I am up early along with my wife and she is online by 7-8am with no problems until about 11am.