Thanks for the posts.
We would be more than happy to look into this issue further, but will need more details. Can you please provide us the following information:
-Roku device model, serial number, device ID, and software OS/version (these can all be found in Settings > System > About)
-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 and provide us with this ID)
-steps to reproduce the issue you are seeing
Once we have this information, we will be able to pass it along to the appropriate Roku team to investigate further.
Thanks,
Danny
You should also check with users this thread since they have the same or similar issues.