Hello, Bonsi. Thanks for reaching out to us on the forums. I apologize to hear of the issues you're running into with the Roku. Now you had mentioned you seem to have the issue with multiple apps and not just the Xfinity Steam app. This is leading me to believe it could be the Roku devices or the internet. Before we jump to conclusions, do you know if all the devices have updated firmware? You can get the steps on how to do this from the following link: https://support.roku.com/article/208755668-how-to-update-the-software-on-your-roku-streaming-device
Once you have confirmed the devices have the latest firmware and still have the issue, I would like to look further into the signal. Please send me a PM with your first and last name so I can check into this for you.
To send a private message, please click my name "ComcastMichael" then select "Send a Message" on the right side
Hello, Bonsi. I have not heard back from you. If you still need assistance, please feel free to start a new thread.