I imagine this is why Comcast wanted to give passing third-parties access to your home wireless router.
Yup! When we added phone to our Comcast they sent an Arris modem/router. I already had a separate modem and Netgear router setup in the back bedroom. On that was Wifi for the bac and a guest network, both pw protected.
Now I have the Xfnity wifi in LR along with the Xfinity third - party thing.
That HAS to be slowing down our net feed although Comcast did boost us from (dependable) 15-20mbps to 35-50 mbps.
I have heard that even our old pipeline that Copmcast said was impossible to update without total rewire DID have a 100+mbps capacity so maybe we won’t slow down.
Still I am not comfortable with the third party thing.