Welcome, @Davej574.
Thanks for posting here in the Roku Community!
We appreciate you letting us know that you're experiencing issues streaming on your Sling TV app. Rest assured that we'll forward this to the appropriate Roku team for further review and investigation.
For the time being, we would also like to request the channel-build version of the app (It can be found by highlighting the app from the home screen and pressing the Star * Button).
Also, a photo or a short video of the incident could help us understand the exact behavior even further.
Please keep us posted.
Thanks,
Emman
Emmanuel-D.
Roku Community Moderator