I have two DVR boxes. I have never had an issue with the the box upstairs, however, I've replaced the box downstairs three times because it's extremely slow. When I turn the box on, I need to wait 5 minutes before it reacts or does anything. I'm starting to think that the box is fine but something else is causing the issue/delays. Any thoughts? Even after it "warms up" it takes a very long time to react. I'll click "guide" and it will take 15+ seconds to pop-up on screen. It's driving me insane.