Gcbee, We appreciate your feedback on freezing, and for optimal performance, we ask that you please ensure you've got the latest firmware version installed on your TV. You can check this by going to Home > Menu > Settings > Support > Software Update. You may also want to further optimize performance with the self-diagnostic tool, which checks memory, frees up unused cached memory, and closes background apps. Go to: Home > Menu > Settings > Support > Device Care > Start Device Care. If you need further assistance, we would be happy to help! Please feel free to contact Samsung Support at 1-800-SAMSUNG, available from 8 AM to 12 AM EST, seven days a week. You can also chat with us on Samsung.com for immediate assistance. ~Samsung Pro

GMC040, We appreciate you sharing your experience with the DU6900 TV. Your feedback regarding image quality is essential to us and will be shared with our internal teams. Please try adjusting the below image settings to improve your picture. Go to Home > Settings > All Settings > Picture > Picture Mode and select the mode that best fits your usage: 1) Standard: Default mode suitable for general viewing environments. 2) Natural: Reduces eye strain for a comfortable viewing experience. 3) Movie: Most suitable for watching TV or movies in a dark room. 4) Dynamic: Makes the picture brighter and clearer in bright viewing environments. 5) Filmmaker Mode: You can watch the source content (e.g., movie) as it is. If the image is defined as Filmmaker Mode, it will automatically switch to Filmmaker Mode while watching. You can also go to Settings > All Settings> Picture > Expert Settings > to manually fine-tune your image. If you need more help, Samsung is here for you. Call us at 1-800-SAMSUNG, 8 AM - 12 AM EST, seven days a week. Our LiveChat agents are also available by clicking on the ‘Support’ link on our website. ~ Samsung Pro