Hi Audidude90, We appreciate your feedback regarding response time. For optimal performance, please ensure your U7900F TV is running the latest firmware. You can check this by going to: Home > left directional key > Settings > Support > Software Update To further optimize performance, try running Device Care, which checks memory, clears unused cached data, and closes background apps: Home > left directional key > Settings > Support > Device Care > Start Device Care If issues continue, please reach Samsung Support at 1-800-SAMSUNG, available 8AM – 9PM EST Mon – Fri, 8AM – 6PM Sat – Sun. LiveChat is also available via the ‘Support’ link on our website. ~ Samsung Advisor

Hi Thankful Nat, It's great to hear you are enjoying your new Samsung TV. If the image appears too dark, we suggest disabling certain energy-saving features, which can automatically adjust brightness and affect how the screen looks. Go to: Settings > All Settings > General & Privacy > Power and Energy Saving, then turn off Brightness Optimization, Energy Saving Solution, Motion Lighting, and/or Contrast Enhancer. You can also adjust the Picture Mode to better suit your environment: Settings > All Settings > Picture > Picture Mode • Standard – Default mode for general viewing • Dynamic – Brighter and clearer, ideal for well-lit rooms • Movie – Best for dark room viewing • Eco – Energy-saving mode • Filmmaker Mode – Preserves content as intended by creators To fine-tune brightness, go to: Home > left directional key > Settings > All Settings > Picture > Expert Settings, then adjust the Brightness level (0–50) to your preference. Lastly, please make sure your TV is running the latest firmware: Home > Home > left directional key > Settings > Support > Software Update > Update Now We hope these tips help improve your viewing experience. If you need further support, feel free to contact us at 1-800-SAMSUNG, 8AM – 12AM EST, 7 days a week. LiveChat is also available via the ‘Support’ link on our website. ~ Samsung Advisor