I have this on my Golf R. First thing in the morning, just a slight hesitation between gears. Feels like the engine dies a bit, I learch forwards a bit in the car and then the power comes back. Only happens when cold usually in the same place just up the road on the way to work. I'm not that worried about it. It's only happened 2 or 3 times, usually when I lift off at a certain rev to change gear.