Network - Wireless & Wired Connections

Help & troubleshooting for network issues, including connecting your device to your home Wi-Fi network, connecting to public networks, troubleshooting wireless issues & ethernet connections, and optimizing streaming performance.
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Level 7

Roku Ultra buffering/tiling after being on for several hours.

I have a new Ultra player and after streaming for approximately 3 hours, it starts to display tiling(pixelization) in the picture.  Then it goes into the revolving circle and won't go away.  Only solution is to go to another channel in the streaming service, select it and then go back to the channel I was watching.  At this point all is ok for another few hours.  I'm using the wired connection and my internet is Google Fiber so I've got plenty of bandwidth.. 1GB speed.  The Ultra replaced a Premiere 4K  and I didn't have this problem.  Went to the wired connection to free up WIFI bandwidth in the home.  Need some help figuring this out as making me crazy.

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