I arrived at IAD off LH 418 yesterday during what I hear is the busiest time at IAD. MCT from my flight to another international flight is set at close to 2 hours. Every one in F had GE so the LH rep walked us to the kiosks. Followed the instructions as usual, got my slip and walked past the mile long line of people trying to get to customs. Walked right through, made my way through the crowd in the arrivals area, to the main terminal and went through precheck lane and arrived at the gate for an earlier flight. Time to get from plane to gate of next flight under 30 min. 10 min of the 30 min was waiting for the moving lounge to fill up.

According to coments from other people this saved at least an hour or more. Not to mention by same day change to earlier flight due to the quick process saved me another 5 hour layover.