I believe all clients will be going UNO, like Roku, apple TV 4. So it’s a waiting game.
I was using an older LG WebOS 1.4 and all you can do is limit the apps installed and Try Uninstall, Restart TV from wall, Remove the authorised device from PMS, Update your server to the latest, re install the TV client. Often this can result in better UI performance. Also Try Dim instead of Blur for TV app Background.
