I have a Samsung TV model UN55, a few years old, that comes with a lot of streaming channels. But I hate the interface. So I plugged in a 4K Roku into one of the HDMIs which works much better until it freezes. That happens every couple of days and I have to turn power off and on for the Roku. I think there must be a conflict between the TV and the ROKU both providing streaming channels. Has anyone else had this issue and is there a fix?