Your speed should be more than fine, that is a crazy amount of lag and not expected. There was one issue in 3.0 that caused lag in the first 3 tutorials, and if you get the latest official version in-game (3.016), that will be fixed. Still, your issue sounds a lot more severe than that, so I wonder about a bum driver or something. My suggestion would be to upgrade to 3.016 of the game, which is quick and easy to so from in the game itself. Hopefully that will solve most or all of the issue. If there is still a problem after that, please let us know and if you can check in your game data directory (see the bottom of the settings menu for the location), then that would also be helpful if any error files were logged there. Hope that helps!