Hello, @Gotdalotta! Welcome to the Xfinity Forums.
I'm glad you reached out to us here for help with the stream beta app.
We definitely want you to be able to enjoy this feature and I'd love to help.
Can you give me a general idea of what kinds of troubleshooting steps you've already taken such as rebooting equipment or replacing any cables?
Can you also run a speed test on both an ethernet and wifi connection so we can see what your up/down looks like. Poor connectivity can often cause the issues you are describing.
I look forward to your reply! 🙂