Recent Xfinity network upgrade in Colorado Spring, CO, goCoax MOCA network and a degraded Xfinity upload speed

I have an Xfinity internet service, and I also have a goCoax MOCA network where the Xfinity service and the MOCA network share the coax. Everything has been working smoothly, but I have noticed recently that my upload speeds have dropped significantly from 40 Mb/s to around 1 Mb/s. I know as part of the upgrade is to open up some more coax bandwidth to allow faster uploads, and so I am wondering if there is now an overlap in bandwidth that degrades the Xfinity upload speed?