Roku is toxic and the only reason I know this is having been forced to deal with their products due to being pre-packaged on smart TVs. Roku comes "free" because it thinks it can extract value from me. It is free like a leech is free.

It tracks what you watch and superimposes ads. The interface is frightfully slow. The remote is hard to use as compared to my phone being the remote, as is the case with a Chromecast.