A:Answer Hi there - The QN85B TV has a built-in digital tuner (ATSC/ClearQAM) for receiving digital broadcasts. If the picture looks blurry while you're streaming content via an app on your TV, it is likely related to your internet connection speed. If buffering persists, we suggest you try the following:
1) Use 5G Wi-Fi or wired LAN if possible
2) Try repositioning the router so there are no obstacles between your TV and the router
If there’s anything we can further help with, please reach out to us at: 1-800-SAMSUNG, 8AM - 12AM EST, 7 days a week, or Chat with us on Samsung.com: https://www.samsung.com/us/support/contact/ ^Gina