I have the exact same problems with my Samsung Smart TV. I joke that I am "rebooting the remote" when I pop out the remote batteries about once a week. The UI

I have the exact same problems with my Samsung Smart TV. I joke that I am "rebooting the remote" when I pop out the remote batteries about once a week. The UI seems to gotten much more sluggish over the last year or two. I have a 500 Mbps internet connection, but speed tests in the TV's browser measure only 40 Mbps (on Wi-Fi or Ethernet). The TV's apps load images and data as if I'm on a 2G connection. The Amazon and YouTube apps hang if I turn the TV off and try to resume playback later. I have to switch to two other apps and then back to Amazon to force the app to crash. Then I can launch it again. And sometimes the only way to exit the Netflix app is to power cycle the TV.