I recently purchased a samsung UN40J5200 1080 Smart TV with preloaded apps including Netflix and Amazon. When downloading movies from EITHER app after about 20 min of watching sound sound cuts out with short irregular bursts of sound. TV verified apps were up to date. I was able to overcome problem by using a Roku model 4620X (a smart device with powerful quad processor) to connect with Netflix etc. My hypothesis for streaming problems is that Samsung didn't put enough RAM to hold the movies and prioitizes picture over sound! IF THIS IS TRUE then they are being CHEAP. Not a good business model. I won't buy another Samsung TV. I wasted about 3 hours on this problem and it was very annoying!