It doesn't matter what you did or didn't do to your car. If you have had repair work to the DSG by your dealer under warranty, or not under warranty, if you had your car totally tricked out or not... if you flashed the tranny or not... it does not matter!
Had that problem. Replacing mechatronics fixed it.
However, now I'm getting about 50% of the time hard drops into first, or the car won't actually go into first until I make a 100% dead stop. Otherwise starts in second.
You can search my feelings on the DSG. Cool tech, but overall, not incredibly impressed. My opinion, automatics from Cadillac, BMW, Infiniti work just as well as the DSG but dont thud, clunk, get caught all flustered, etc. And they don't cost thousands to work on.