Hi, @landers3
Greetings, and welcome to the Roku Community.
Thanks for sharing your concern with the Xfinity app that freezes intermittently on your Roku TV and device.
For this matter, it is advisable to continue working with Xfinity's support team since an incident where an app freezes on multiple devices indicates that the app is currently experiencing an issue. Take note that the majority of channels available on Roku are developed and maintained by the respective channel providers.
Xfinity's support team can provide you with a workaround or develop an update to their app/channel to fix the problem.
I hope this will be sorted out soon.
Thanks,
The Roku Community Team.
Takashi O.
Roku Community Moderator