MB 13 ARL Runaround Values

Hello everyone,
I have a short and concise question, but unfortunately, I couldn't find the answer through searching.

I noticed a rough idle on my Leon ARL with 65,000 km, specifically at a slightly elevated RPM of around 1120. I noticed it while I was at a traffic light and playing with the accelerator.
MB 13 indicated that in this range, I was getting a value of approximately -1.0 to 1.5 on one cylinder, even while driving.
Other cylinders are approximately at 0.0-0.5.
I'll leave the ZMS out of this for now.
Does the value of cylinder 1 already indicate insufficient roundness?
Does this phenomenon possibly also lead to jerking around 1500 RPM in the 5th and 6th gears at full load? (I'm experiencing that too }).

Since the car is still in the extended warranty period, but the friendly customer service representatives are unwilling to take action, I would be grateful for any tips on how I can resolve this myself or how I can help the technicians fix it.

Hello,

-1.0 to -1.5 is within the acceptable range, with a tolerance of +/- 2.5mg per click.

Best regards, Rainer.