Thanks for the posts.
In order for us to assist you further, we will need more detailed information about the issue you are experiencing:
-Roku device model, serial number, device ID, and software OS/version (these can all be found in Settings > System > About)
-does this issue occur on a specific channel? if so, what channel and what version/build is the channel (this can be found be selecting the channel on the Home screen and pressing the * button)
-tracker ID when this issue occurs (when you see this issue occur, press the Home button 5 times, followed by the Back button 5 times)
-steps to reproduce the issue you are seeing
-screenshot of the issue on screen
With more specific information, we will be able to assist you further.
Roku Community Moderator