Supports multi-language interfaces and regional content layouts.

is a third-party application developed specifically for TV interfaces. It is not the official Google app, which is exactly why it works so well.

Once the installation finishes, click Open to run the program for the first time. Configuring the App for Best Performance

This is the crucial part. Smart YouTube TV has different versions for different resolutions (1080p Main, 1080p Alt, 4K, etc.).