On another thread about Harmon Kardon Fred said he gets better quality of sound through use of Alexa, I know at home we often play/use Spotify via amazon devices/Alexa so that may be an option worth exploring.
He also references use of a bot on his android phone to ensure its connected and enabled as a WiFi hotspot for the car as soon as he gets in, that way all the cars connected services work despite the unreliable cars own connection
Am sure he can correct me but worth finding and reading those posts I think