While you may have seen Roku boxes around your local Best ... the video is being streamed to you over the internet in real time. If you have a TV with no "smart" functionality — meaning it ...

Clearing the cache can help speed up many devices, but Roku doesn't provide an easy option for its TVs or streaming sticks.

When you buy through our links, Business Insider may earn an affiliate commission. Learn more Cable TV is on the way out, and the new way to watch your favorite TV shows is through streaming.

Sonos is reportedly getting close to launching a product in a new category: a premium streaming box ... an Apple TV 4K with Wi-Fi is priced at $129, while the Roku Ultra is $79.