Hi @SouprGrrl,
A warm welcome here in the Roku Community!
We understand you are having a problem with the Roku Ultra since all the apps or channels are crashing and it will restart by itself. We're happy to assist you further.
Please try to restart your modem and router. After restarting your wireless network connection, you may need to restart your Roku device by going to Settings > System > System restart.
For additional troubleshooting, you can visit our support page here: How to resolve a channel playback issue - Roku Support.
We hope this helps, and please keep us posted if the problem still exists.
Best regards,
John
John
Roku Community Moderator
