Advertisements Yeah, congestion would come up more with DSL for me because the congestion happens inside my own network. If cable internet is congested in my neighborhood, I might drop down 15mbps. That is still almost 3 times average DSL speeds. I think if you are using DSL for cost reasons, that is one thing. But if you are using it because you are worried about network congestion, you probably haven't used cable internet in quite a while.