If your device has an external SD card, it is possible that the memory card is going bad. Depending on the brand of card and wear and tear they get form use, they tend to last about 5 years before getting corrupt and failing. It might be time to replace the card.
Thanks for the comment. I guess it is possible. But I don't think it likely for this reason: One of my Ultras (a 4670X) and its memory card were purchased a year or two after the others, and they all started displaying this symptom at the same time sometime within the last month or two. So it seems like an update caused this. Also worth noting, different apps are affected. For example, in my living room I get it on YouTubeTV, but in the bedroom I get it on Prime Video.
It is possible that there is something quirky going on with the OS and an update, but if you have a spare card that hasn't been used, you could always try that and see if it works.
If you haven't yet, try a system restart or unplug the Roku's for 30 to 60 seconds to clear out the cache completely and see if that helps as well.
I've definitely tried unplugging/restarting/etc. And putting if I got a new card to try it will certainly work for a little while, but won't be an immediate test. Like I said, I popped the card out, the app re-downloaded and then it worked immediately. I put the card back in and the app continued to load immediately...for a few days. At some point it went back to (I assume) loading off of the card. If I can dig up a card I might try it, but it seems like something is going on. Do you have either of my Roku Ultra models by chance?
I have 5 Ultras, but not your specific model. I have not seen this behavior on my Ultras though, so it could be specific to that model or something going specifically to your setup.
