I just downgraded my Netflix account, their app runs so poorly on my ROKU tv that it drives me crazy. I have to really want to watch something to put up with it. I bought Disney+ with the money I saved and it's app runs flawlessly on my TV.
Before you ask I have tried everything to fix Netflix from their help desk and every source I could find on Google. It continues to hang, drop completely out to the ROKU home page, and don't ever attempt to back a show up to rehear something as it may just lock you out of everything for several minutes