On the Pc version I have found that remapping the controls can cause major issues with the quick time events, to the point of being progress halting on the 2nd time around on the train. On my 2nd time around on the train, after kicking the guy out the window and taking his gun, and going to the next window by the door and jumping out, with the controls remapped, I can leap via spacebar still to the next train car, but I will die anyway instead of being prompted to press the next key to climb up the car. Really surprised a bug like this slipped past quality control.