Hi everyone and thanks for your comments.
I have been to the dealer with my symptoms. After my initial report I decided to pay closer attention to the gearbox operation amd noisesit emits. I drove without music and with AC turned off for more than an hour that was quite tough. To my surprise lots of gearbox noise reachs the cabin when one pays attention to it (mostly gearshift noises and clutch operation noise). After odiagnostic at dealer I was told that the car operates as designed and overall VAG dual clutch transmissions are quite noisy/clunky. As oil heats up tolerances between different components increase and the gearbox emits lots of noise.
For now I decided keep an eye at the gearbox. I have 5 year warranty and for sure if there is something wrong it will manifest itself sometimes in the future. I just can not understand why Audi uses such a noisy tranny in such a nice overall package. I do not believe several pennys saved on the gearbox and on the gas compared to slushbox is worth the long-term reputation. It just sometimes kills the premium feel.
