I have crashed playing local multiplayer with another player and also solo within the last 12 hours while doing event trial stages.  Both times the screen just freezes for over a minute at which I force closed the application.  I can restart the game and nothing seems to be wrong. 

The local multiplayer freeze was with the system docked and the solo game was in handheld mode.

I have over 200 hours played and I've crashed maybe 3 times so this seems out of the ordinary.  Keep up the good work.