Greetings @mfillinger,
Thanks for reaching us here in the Roku Community!
We're here to help with the playback issue on The Roku Channel, and we really appreciate the extra details you've provided. It looks like the device you're using is no longer receiving updates, which is causing the problem. You might need to consider upgrading, and I've sent you a private message to give you further assistance with this.
Regards,
Rey
ERey.
Roku Community Moderator