question

Hi, I have recently bought the TV Fire Stick and video seems to work fine apart from the video on the official youtube app. Every now and again the video stops then starts a few seconds again. This is NOT buffering as the rotating circle of dots does not appear and when checking the video overlay and play bar there is always a good 10 - 20 seconds buffer in front. Also when I once pressed up on the remote when the video had frozen to check the video play bar the overlay loaded up sluggishly in sections so I know it is either the device or the app that was struggling. Anyone else have this issues? I tried clearing the data etc and it seemed to help for 20 mins. I don't want to use another youtube app as the official one is the only one where I can control and search from my phone. Youtube is the ONLY reason I bought the firestick. Thanks, Coope