New Router Motorola MB8600 very slow

2 days ago I upgraded to a new modem - MB8600 from an old SB6121.

A week ago I upgraded from 200 Mbps to a Gigabit plan. 

After activating the MB8600 online, I checked my internet speeds which now = 30-32 Mbps download and 40 Mbps upload. Previously, I was getting 130 Mbps with a slower plan and my old SB6121. The blue download light is flashing on the new modem, the upload light is solid. I've tried running speed tests directly from my modem and also through my router, there is no difference in speed. 

I've called Comcast and have chatted with numerous agents, some of which say there is a signal issue on their end but the last 2 I've chatted with say there's no issue on their end. All they want to do is send a tech out to my house which doesn't seem helpful. 

Any thoughts or ideas? I know others have had this issue but I'm not sure what their resolution was. Here's some info from my modem below: