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. Please, no support questions via private message -- post them publicly to the Community where others may benefit as well. If this post solves your problem please help others find this answer by clicking "Accept as Solution.".
Streaming Stick 4K+ 3821 | Streaming Stick+ 3810 | TCL Roku TV 43S245/C107X