@bakugo
Am assuming the suspect Vizio is a different model number than the other two?
Have you tried using a different HDMI port on this Vizio. Additionally, try disabling the Roku device's power saving feature which is reportedly causing some HDCP errors.
(Settings/System/Power/Auto Power Savings/disable 20 min feature)
Something is producing an error between the HDCP query and response. (need to look at involved chain of HDMI cable and port, the TV HDCP version and compatibility, and the Roku device).
Roku Community Streaming Expert
Just another Roku user... I am not a Roku employee.
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