I am struggling with Tier 2 on mastery challenges of London Commuter. I managed to do the first one, but the second one isn’t working. This is “Push to the limit - Complete a scenario or timetable after reaching 85mph, but without exceeding 90mph”. Every time, I do complete a journey without overspeed despite the game crashing as I do save my progress most of the time, it doesn’t count for some odd reason. Anyone else having the same problem? Also, any ideas or solutions? Please help if you can.