My samsung tv is like this. All I want to do is turn the tv on and switch to HDMI 1. Something that used to be fast and trivial now takes ages of waiting for laggy animations.
It might interest you to look into the "digital signage" market. It is displays made for hotels and conferences and the like and they don't have those smart features (yet). Picture quality likely isn't going to be top of the line, though, so it depends on what you value.