I have a One, Play:3, and a Beam. The Beam is wired directly to my TV and is great. No issues.
The One and Play:3 stream through WiFi and constantly give me problems.
Songs played through Amazon Music or books streamed through Audible pause, skip, or stop frequently. Audible books through the One are unlistenable because it will pause, then skip entire chapters. The app tells me that my internet connection is unstable, but I can literally put an Amazon Echo Dot 2nd Gen in the same place as the One or Play:3 and it streams through my WiFi with no issues. Has anyone else had an issue like this?