Roku Device Features, Settings & Updates

Help configuring Roku device settings, using Roku OS features such as screen mirroring, adjusting display type and audio settings, using Guest Mode, and assistance with software updates.
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Level 7

should i upgrade to the 4800r

I have a native 4k projector and high home theater sound system.   I am using the Roku 4661r  does the new 4800r offer my any noticeable improvements in HDR 10 or Atmos sound.  Or is there another reason to upgrade

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