Sorry Gary, I am familiar with the slowdowns during peak hours, but from 15Mbps to 1.5Mbps is not normal slowdowns as I have seen in the past.
I'm curious to know why my modem rebooted itself. In looking at the event log, I see some re-boots during the day while I'm at work. It's not a power loss because the unit is connected to a UPS. Also some uplink losses at various times along with re-ranging and down states.