https://go4trans.com/technical-transmission-general-articles/useful-tips-on-driving-cars-equipped-with-dsg-transmissions/
How to use DSG transmission properly in traffic jams
It is not recommended to set the gear selector to N position. Modern robotic transmissions drop out of meshing simply by pressing the brake pedal. In other words, when the brake is pressed, the car is in neutral.
Do not drive very short distances frequently alternating gas-brake pedals. Each time when you release the brake – it's as if you release the clutch, it automatically starts coming into contact with the flywheel, and it slips due to incomplete contact. When you release the brake and start driving at a speed of 5-6 km/h, then the full engagement takes place.
Let the car in front drive at a distance of about 5 meters from your car and follow this car at a low speed in first gear.
The resource of DSG6 and DSG7 directly depends on whether the transmission in a traffic jam will shift to the 2-nd gear or not. Frequent shifts from the 1-st to the 2-nd gear and vice versa in traffic jams will kill any robotic transmission with 2 clutches (clutch and flywheel wear and overheat). To avoid such situations, it is better to switch to manual control. To put it simply, drivers independently engage the 1-st gear and do not shift to the second in the situation described above.