Hey, @sonora.
Thanks for reaching out! We're here to help.
Also, have you thought about switching to a high-speed HDMI cable to see if that helps? To get a better idea of what's going on, try it out on a different TV to see if the issue happens there, too.
Please let us know what you find out!
Best,
The Roku Community Team
Emmanuel-D.
Roku Community Moderator