Audi S3 owner for a month - s tronic gearbox

Hello guys!!! I am new to this forum and i dont even know if the place to post what I would like to ask is correct.

Actually I've bought my s3 8v s-tronic around a month ago and now I have around 1600km on board. The most of my driving is in the city and less in highways. Today I observed something strange to my gearbox and I dont know if it is something important or not.

Usually I drive in comfort mode and on D using the paddle shifts some time. Today, i started the car and drive it for around 10km in the city and I observed that the gear changes was made in higher revs.
For example the gear for going from 1st to 2nd was made exactly at 2100 rpm which is normal but the gear change from 2nd to 3rd and 3rd to 4th and etc was made at 2500 rpm.
Without going to 2500 then the gear didnt changed by itself as it did normally before.

Now I know that I can use the paddle shifts to change the gear but for the whole month now the gearbox reacted on this way by changing gears at around 2100-2200 rpm and now it wanted 2500.

Does anyone knows why?? Does anyone had any similar situation??

Bear in mind that the whole description above is for normal driving.

Thanks a lot.

Actually I checked also that to see if i put it in S instead of D but no. It were in D. Also the paddles works normally and when I revert back to D again the same thing.
Also, bear in mind that the dashboard does not showed any fault.

Guys the road was straight and no uphills were. Itwas my daily driving attitude with no something special!!!

Heheheheehhe!!thanks very much for the info guys but after a 4 hours brake I restarted the car to go somewhere else and the gearbox is as normal. Everything as used to be!!!! Very excited!!!!

Just to make it clear what I am saying is that if your right foot is very stable om gas and not to the floor the changes are made between 2000-2300 rpm. I am not saying is absolutely the same rpm every change!!!