So I tried to watch something on Hulu the other day and it completely locked up the TiVo Stream 4K. I launched the app and picked my profile, but as soon as it started to load the thumbnails it crawled to a halt. I tried hitting the Home and TiVo buttons to exit the app, but nothing worked. I even let it just sit for a couple minutes to see if it would recover but it didn't. So I have to unplug it and allow it to reboot. After that the Hulu app worked just fine. This is the first time I've seen an app on a streaming device like this (other than a TiVo Mini) actually take down the whole OS. I've seen the apps themselves crash and stall on other platforms, but you can always just exit to the home screen and manually kill the app to recover. Seems like bad design to allow a single app to completely crash the whole OS.