Thanks for sharing this here in the Roku Community, @Jim1348!
We understand that your Roku 3 device is having cut-outs and we'd like to help you out with this.
Have you tried changing an HDMI cable to see if that makes any difference? If not, we would recommend doing so and observing if the issue will be resolved.
If the problem continues and you wish to upgrade to a newer Roku device, the Roku Ultra would be an excellent option.
Need more information? Get to know more about the Roku Ultra and how it can provide an exceptional viewing experience in your home.
Please let us know if you need further assistance.
All the best,
Emman
Emmanuel-D.
Roku Community Moderator