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

is roku going to support hdr subsampling 4.4.4?

hello & happy 2021,

i have a roku ultra model 4670 running 9.4 build 4200-46

is roku going to support hdr subsampling 4.4.4?  my roku advanced system settings screen only displays the lower quality choices 4.20 & 4.2.2, but my sony 915 projector support 4.4.4

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