When either entering or leaving a city I get a long freeze in the game upto 90 seconds, so far this has happened on the Boston Sprinter route leaving and entering Boston (around 2miles east of Route 128) and also happened on the Koln Aachen Line arriving in to Koln (around 2km west of Koln Ehrenfeld). Prior todays rush hour I had never experienced this before on the Koln line.