Thanks for the follow up regarding the issue you are experiencing with Live content within the Hulu channel.
Whenever experiencing a channel playback issue, we first recommend to try removing the channel from the Roku home screen by navigating to the channel tile, pressing the * key on your remote and choosing 'Remove channel'. Then restart your device from Settings>System>System restart. Once your player starts up again, add the channel back once more, specifically in this order.
Does this clear up the issue you are seeing? Please keep us posted what you find out and we will continue to assist you further.
Roku Community Moderator