Solid orange US/DS lighting can mean two things: The modem synchronized successfully but data transfer speed is constrained for some reason. Continued traffic is passing through but intermittently buffering, resulting in slower effective bandwidth. Most ISPs actually assign a US or DS channel an orange identifier at setup. If solid, that specific upstream or downstream node has linked but the other side may still have issues. You need both US and DS solid (usually green) for peak performance. Check your router interface details - identifying unique colors is tricky.