luc7v

I have a LG Smart TV 32LF650V. When I play movies on HBO Go, they play fine about an hour and a half. But if the movie is longer, it randomly stops, then starts from the beginning. So I must go fast forward. But it happens again after a few minutes. It becomes a pain. speedtest.net shows 58 Mbps, so the speed is not an issue. Any ideas? Thank you.