If the TV has one or more interfaces for a computer like VGA, HDMI, etc, then maybe there are some methods to control the picture from the firmware in the TV. There may be an option to strech the picture. I have a widescreen monitor and when I watch video from HULU, it still tries to keep the aspect ratio and letterbox on the sides. I think this is because if it stretched the video out to the sides then it would severely distort the video. You may look for a website that the manufacturer has and see if they have some kind of information about this subject. There may be some settings that can affect the performance. With a TV you may have to make sure you do not use too high a refresh rate and the video card may have to have a screen size that will work better with the TV. The resolution settings may also have a relationship to the TV; or the TV may require a specific resolution setting. Also the Video card may have problems with a really large screen resolution. Maybe there are driver settings for widescreen modes for your video card that will help.