I have had my slingbox for a while and I have had no problems with it what so ever. Then suddenly a few weeks ago, the picture does not fill the entire space of the screen on my computer/tv/whatever. I can switch it to the letterbox zoom and it will fill the screen but the picture quality is so bad I can't make out some of the numbers while watching sports. My internet speed is great. I tried to reset the box. No luck. WTF? Nothing has changed, so how can I get my full screen 1080 picture back?