Personally, I found that on my oldish (Sony X900F) TV Netflix has become faster over the years, while the rest of the (Android) TV has become slower and slower,

Personally, I found that on my oldish (Sony X900F) TV Netflix has become faster over the years, while the rest of the (Android) TV has become slower and slower, up to the point where now apps (that once worked perfectly) now are buggy, don't open or require a Wi-Fi adapter restart.