can you please try holding F1 - this will print the FPS in the lower left corner - it should be 60. i've been told the game does run at double speed on some high frequency monitors! (though pondskum mode IS quite confusing and hard to see where you are in :))
ah.. whoops! sorry.. i will try to make it run at a locked 60 on all systems in a future update. for now i'm not sure if there's anything to do about it..
