Hi Sox Steeler, We appreciate your feedback regarding your U8000F TV’s performance. If you're experiencing freezing or lag in general response time, please try the following steps: 1. Check for firmware updates – Keeping your TV up to date can resolve many performance issues: Home > left directional key > Settings > Support > Software Update > Update Now 2. Run Device Care – This tool checks system memory, frees up cached data, and closes background apps that could be slowing things down: Home > left directional key > Settings > Support > Device Care > Start Device Care 3. Cold boot your TV – With the TV powered on, press and hold the Power button on your remote for 5+ seconds until the TV restarts. This helps refresh the system. If you're still noticing performance snags after these steps, please contact Samsung Support at 1-800-SAMSUNG (8AM – 9PM EST Mon – Fri, 8AM – 6PM Sat – Sun). You can also connect with a LiveChat agent via the ‘Support’ link on our website. ~ Samsung Advisor

Hi, It’s unfortunate to hear about your experience with Samsung’s U8000FD TV. We’re committed to delivering quality, value, and the best possible product experience. This TV is backed by a 3-year limited manufacturer’s warranty, which includes authorized repair for eligible defects when purchased brand-new from an authorized retailer. To review full warranty terms, you can enter your model number here: https://www.samsung.com/us/support/warranty/ We’d appreciate the opportunity to assist further. Please contact Samsung Customer Support at 1-800-SAMSUNG (8AM – 9PM EST Mon – Fri, 8AM – 6PM Sat – Sun)or connect with a LiveChat agent by clicking the ‘Support’ link on our website. ~ Samsung Advisor

Hi Sunowa, It’s unfortunate to hear your U8000F TV is turning off by itself while you're streaming apps. Please try resetting your TV's Smart Hub, as this should resolve the power off issue. Go to: Home > Settings > Support > Device Care > Self Diagnosis > Reset Smart Hub. Should you need more help, we're here for you. You can reach us at 1-800-SAMSUNG (8AM – 9PM EST Mon – Fri, 8AM – 6 PM Sat – Sun) or reach us via text 24/7. You can also visit ‘Support’ on our website for: • Live Chat • Manuals, Software, & Warranty Info ~ Samsung Advisor