Indeed first person to report it but not the first to suffer, what happens is the time for a quest to load become drastically slower to the point where it takes about a minute and a half to 3 minutes. From observing what causes the slowdown I've narrowed it down to the people you are playing with and their location, i.e if you two live far away from each other it will be increasingly slower, satelite internet has just as good as a download speed as high speed internet but the signal sent upwards struggles an incredible amount which of course results in a slower connection to other people, and because the connection is from a satelite I also assume you have a wireless router and distance from that also factors into the speed. There is many other things that factor into your speed such as other people using your connection (people where you live or people hijacking your connection) and the total users on the entire network connection for your area of residence.
sorry for long post, I always seem to get into something then i can't stop typing about it :/
Edit: also newer computers also seem to have some effect on how the game plays, in which it could be many things such as proccesor, graphics card, CPU, RAM, try running as few as things as possible while playing and see if that helps, it helps me to a certain degree.
Hope I helped...