We have also had horrible internet service for about the last 3 days. Frequent dropouts and slow speeds. I read this is a nationwide problem for Comcast. Probably nothing wrong with your modem and/or router.
Hello, kh6idf. Thanks for reaching out to us on the forums as well. I apologize to hear you are having the same issues. If you would like me to look into the issue, please send me a PM with your first and last name so I can further assist you as well.