Keep in mind the connection between your phones and the Uconnect5 head unit is 100% digital. That means it either works or it doesn't work. There is no such thing as degraded sound quality like you might have over an analog radio signal. No static, no fuzz, no loss of treble or bass.
With that said, it is quite possible to actually lose the connection ENTIRELY due to severe interference. You could also have hardware/firmware issues in the phone or the head unit. Those might be rectified by an OS patch or new firmware build on the phone. Full disconnects are usually pretty evident when the head units starts saying No Device Connected, etc.
The software music player you are using on your phone (spotify, itunes, google music, etc) could also be the culprit if you are staying connected but getting pops and crackles. Its hard to believe at this point, but buggy music players are in fact a thing.
Finally, if you don't have your music downloaded locally to your phone, you could also be experiencing network issues with your cell network. That would leave your phone connected to the head unit, but still resulting in crappy playback. I'd imagine power lines are much more likely to interfere with your cell connection than the super short distance connection with Uconnect5. You could even have some anomaly in your amplifier, or perhaps the cabling to your speakers.
I'm no Uconnect5 fan to be certain, but a little diagnosis of these things might lead you to a solution that doesn't require Dodge, Panasonic, or their unholy alliance to actually fix or change anything.