I recently started having a problem with my Roku Ultra (2019 model) and Netflix. I will play something on Netflix and it will freeze. I can pause and unpause and it will start playing again but after a while it will freeze again. I don't have this issue with any other channel. I tried removing and reinstalling Netflix but the issue is still there.
I tried removing the channel, rebooting and installing Netflix again. Yet I have the same issue. I don't know what would fix it short of a full reset of my Roku device. I do have a microSD card installed in my Roku Ultra. I don't know if that is causing an issue. I have also tried clearing the cache (Home 5 times, Up, Rewind 2 times, Fast Forward 2 times) and that did not fix the issue either.
I finally got around to doing a full factory reset of my Roku Ultra. And somehow the Netflix problem is still there. I haven't a clue how to solve this other than replacing the unit. Very disappointed in Roku.