I added a video extension cable to my system and now the image appears blurry. What happened?
Many extension cables may cause an echo effect resulting in ghost images on your screen. This problem may be more noticeable at higher refreshes, screen resolutions and color depths. It is possible to buy a high-quality, shielded, low-impedance extension cable. However, a single-piece cord is a better solution. You can expect image degradation with cable lengths of ten feet or more, even with the best quality cable.