Thanks for reaching out to the Roku community!
We'd like to gather more information about the issue you're running into.
Are all other streaming channels playing content normally? Does this happen on all movies/shows in Showtime through The Roku Channel or just specific titles? What troubleshooting steps have you taken so far to try to resolve the issue? Can you please provide the serial number/device ID on your Roku device? Any additional information that we can look at?
With more information, we will be able to assist you further.