2023 Adaptive Cruise Control

[German engineering fan]

I own a CANADIAN 2023 S3 in and I recently visited my local Audi dealership regarding a question about the operation of the Adaptive Cruise Control (ACC) system. The service department advised me that the ACC speed adjustment function on my vehicle only increases or decreases in 10 km/h increments when using the control lever. However, based on information from the owner’s manual and other Audi documentation, my understanding is that the system should adjust by 1 km/h per brief press and by 10 km/h when the button is held.
Could someone please confirm:

1. Whether the 10 km/h increment behaviour is normal for the Canadian configuration of the 2023 Audi S3; and
2. If smaller (1 km/h) increments are expected with a brief tap of the control,
3. Whether there are any known settings, software versions, or updates that may affect this functionality.

Thank you,