Problems PiMusicbox 0.7.0RC4 raspberry 3b

Hi i’ ve a problem with raspberry pi 3b with PiMusicBox 0.7.0RC4, when play streaming webradio lag, the music stop for few seconds and then run.

With raspberry pi 2b and PiMusicbox 0.6.0 is all ok, but ver 0.6.0 don’t run with raspberry pi 3b.