Hi, @snicho
Thanks for posting here in the Roku Community.
We appreciate your for sharing this information with us. This buffering issue might be due to a slow network caused by a poor wireless signal, issues with your router, or the quality of your internet service. Have you tried restarting your router/modem or connecting to an alternative network, such as a mobile hotspot, just to test if the video playback still buffers? If it does, this seems to be an issue directly with the channel built, which the channel provider can address on their end through an update of their channel on the Roku platform. If this is the case, we recommend reaching out to them.
All the best,
Kash
Takashi O.
Roku Community Moderator