Music Cast freezes / lags

Hi everybody, I am experiencing frezing and lags with the Muscic Cast app for android and my Yamaha NP-303. Normally I haven’t had issue so far (apart randomly some songs restarting and a few more issues) but it’s in these last three/four days that the system hjas become instable. I made facorry reset of the player, re loaded the latest sfirmware, installed the app.. /android) but no imptovement. I don’t know if is an issue with the app or deezer (or the player) ...everytrhing runs flawlessly for a while and immediately after..lags or stuck..than again for a while all seems and so on...the system works somehow  “at waves”. Anyone experienced tihis recentrly? Any idea? Thanks in advance Lorenzo