Greetings,
I would like to point out that when casting to a Google cast device and the mid song click to play next Deezer abruptly cuts the songs, makes some popping noise and then plays the next song. This happens on both Android and iOS devices. I then tried the same thing with Spotify, but that does not happen there, it switches seamlessly (granted it takes 0,5 after clicking next song but at least it doesn’t make popping noise and just stops the song abruptly). Then I also tried casting to the same device over Airplay with the iOS device and it also doesn’t make the popping noise. From this I can deduce that either Google cast has to make a better transition between songs, or Deezer has to change it.
Cheers,