I have a GeForce GT630 video card and I'm running to and Acer and Dell monitor. I have video preview sent to the dell and use Acer as aworkspace. The smaller the video preview window on the work space,,,the worse the video quality on the external monitor, It seems to pixalate. If I stretch the preview window to almost full screen (but then I have no room for tracking) the quality on the external monitor is a lot better.