Mopidy stops streaming every few minutes for a few seconds

Hi all

I use Pi3 with hifiberry AMP+. When I listen to a stream, every few minutes the stream stops for a few seconds and then starts again. It does not matter which stream I listen to.
Its connected to LAN and I have 100Mbit/10Mbit INternet soooo…

I also tried to use more buffering, but it seems its more a mopidy problem?

Any Ideas where I should look next / test?