My WAN has significant signal noise leading to packet loss issues on my local network.

Technician came out and diagnosed that everything is good on my end. All scores were green except for the WAN score which was low in the 50-60s. From my understanding the 2GB upgrades and maintenance in my area has introduced significant signal noise into my local node. Because the signal to my home is technically fine there is nothing else a technician can do and Comcast just says this will resolve. Have had significant packet loss issues for the last year because of the additional signal noise effecting the WAN. The app tells the customer the network is fine when in reality it’s not. Easy reason to switch to another provider with fiber if Comcast won’t address this at all