What model Roku, and what model number (check from Roku home page via Settings .. System.. About)?
How is Roku connected to tv? HDMI port? Directly or through an intermediate device such as an A/V receiver?
Roku Community Streaming Expert I am not a Roku employee, only a user like you. Do not ask me support questions via private message -- post them publicly to the Community where others may benefit as well.
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Streaming Stick 4K+ 3821 | Streaming Stick+ 3810 | TCL Roku TV 43S245/C107X | Streaming Stick 3600