Playback Issues - Audio/Video & Power

Help with audio & video playback issues, TV display type recognition & compatibility, HDCP messages, troubleshooting playback errors, advertisements, and resolving power issues.
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Level 7

Max resolution 720p

I have a Roku 3 and Ultra, and recently I've noticed the 3 won't display some videos properly at 1080p.  I can set the resolution of the same video to 1080 just fine on the Ultra.  I've gone into the settings to manually change the resolution to 1080.  I've plugged both units into the same TV.  I'd appreciate some trouble shooting assistance.

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