Whether you're dealing with weak signals, cluttered cords or devices that struggle to hold a charge, these problem-solving ...
If the cable connection is loose (or even the connector on the device), that could explain why the performance is varying so much. Or the connectors of the cable really are faulty and moving them ...
If you love technology as much as I do, you probably own a ton of different devices. Of course, the more devices you have, the more nightmarish it becomes to set up your desk or entertainment center.