A speed of 3.4 megathings is indeed slow and will slow up your browsing something rotten. People in towns and reasonably near the exchange usually get up to 20 megathings.
But the total website browsing experience is the sum of all the system delays, and these include how good the website is, how many users are loading it with requests, how well the message packets make it to your provider, and how well the provider's infrastructure dishes out everything to you and your fellow subscribers.
It is not how fast your line is that matters, it is how all the slownesses add up.