Thanks for joining us here in the Roku Community, @gfwWVA!
We appreciate you letting us know about the issues you've encountered with your Roku's running interface. Rest assured that we will help you find the best resolution possible.
Since you've mentioned that it still reacts to both the physical remote and mobile app, this means that your Roku device is still working. However, it might need a software update.
We suggest manually checking for software updates under Settings > System > Software update > Check Now. After doing so and the interface is still slow, you may want to consider checking this support article to help you determine if this particular Roku device can receive the latest software version:
I hope you find this information helpful!
Best regards,
Carly
Carly Y.
Roku Community Moderator