Largest Dynex TVs

The Component input works but the picture size is not correct, it's compressed vertically and I have to set the TV to Zoom to fill the screen!

It's native resolution is 1360x768 (which means that 720 picture is actually upscaled to that, but it does a good job of it), and if you use it as a computer monitor, it has to run at that resolution or everything looks like soup.