Since this usually means lots of people from round the world are trying to access the exact same content; why not utilise a small bit of the radio-spectrum to rebroadcast popular items on a repeating 'carrousel; like you would with teletext.

You would need a new type of n/w card in your pc capable of receiving IP packets (read-only obviously) and software to seamlessly combine your 'real' internet connection.

At least then the slow-down shouldn't happen as the system is immune from high-usage; and even for users who don't have new technology, they would benefit from reduced loading anyway from those who do...