The seventhramp checkpoint DSG is a robotic transmission of two "dry" chaining. Basic elements-clutch, gear shift ("mechatronics") And the gearbox itself.
The gearbox is bad for long distance in traffic and can overheat, which makes the car start to twitch. With dangerous overheating, the box may be disconnected.
It is important to remember that when you replace clutches, you need to calibrate or change the "meatronic". If you don't, the new clutches are going to come down quickly.
At the start of the mountain, the car can be rolled back a bit. That should be remembered. This is not a malfunction, it is a characteristic of the gearbox design.