Spotify connect stops connection to samsung soundbar

[wire]

I use Spotify on a Samsung Galaxy Note3 and connect it to a samsung soundbar HW H750. This works fine but after random time, the connection aborts (musik stops) and I have to choose the soundbar at the "available devices" screen again.

Firmware of soundbar is new, Android at Note3 is newest, Spotify was reinstalled completly. 

Streaming musik from my PC with samsung multiroom app to the soundbar works fine, streaming music with Spotify to a chromecast also works fine. Only the connection from Spotify to the samsung soundbar doesn't work.

I am little bit stumped. Could anybody help? 

[Daniel]

Try disabling the power saver feature in your phone power settings. lots of samsung users have reported that this is killing spotify.