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Having an issue with HDR contents

I'm currently having an issue with HDR contents.

When I play or stop an HDR video clip on my channel, the screen appears to flicker briefly on some TVs or the screen blank out with "HDMI signal lost" on it for a quick second on some other TVs before the playback starts.

One thing is it doesn't happen on built-in apps on the same TVs. Only happens when using Roku set tops.

Is there anything I can do to prevent this programmatically? 

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