Not sure if this is exactly the same issue, however in my gen1 Tig I've experienced issues with the DSG in "D" when pulling off from low speed. The transmission short shifts from 1->2 and then will not shift back to 1st gear no matter how hard you hit the accelerator pedal. This is more of an issue rolling into an intersection or onto a round-about and then trying to get going quickly. If you're in 2nd gear and engine at 1,500 RPMs you will be off-boost and will not pick up until the revs get up to 1,700-1,800rpm.

This is a "quirk" of the DSG programming in "D" that it won't shift back to 1st gear until you come to a complete standstill. The only fix is to flick it into "S" mode if you're going to be needing instant acceleration or hit the paddle shifter to force it to 1st gear. Alternatively get an aftermarket DSG tune which fixes this problem.