I was leery of of Tizen on my Samsung TV but it's fine

"fine" is a very accurate word to describe Tizen. It's slow and really hard to find things sometimes (why do TVs not have a simple "input switch" button any more?), but ultimately it gets the job done.

You can make Tizen much faster by manually uninstalling the Samsung TV Plus app. It runs in the background constantly. "Much faster" is still slow overall, unfortunately.