"reprovision" or "push the correct boot file" for my specific speed tier.

Additional information. I had my Ubiquity UCI cable modem removed thinking that may have been the issue. It was replaced with a Comcast Modem/Router/Gateway. The speeds out of the Xfinity modem. The problem now is, I put the Xfinity device in bridge mode and I am letting my Ubiquity UDR7 (Dream Router 7) do the work along with my U7 Pro XGS access point. I assume there is a boot file causing an issue with my 3rd party equipment. I would hope we can resolve this issue. I would like to return the Comcast equipment and add my Ubiquity UCI cable modem back to my set up as soon as this is resolved. This was not an issue on my previous speed tier 600/140. It was only when I upgraded to the 1000/100 tier this became an issue. All my equipment is 2.5 G capable.