Audio is distorted during phone calls.

My brand new Apple Watch Ultra 2 makes cracking sounds when I make calls with the speaker volume at Max.

Audio is distorted only during normal or FaceTime calls. The problem does not occur when recording or playing sounds from the speakers. It's never been in the water, I haven't even washed my hands while wearing it.

It may be a software issue because the Apple Watch Ultra (1) had the same problem and it was solved with the watchOS 9.0.1 update.

Apple then had the following note in said update: «This update includes improvements and bug fixes for your Apple Watch Ultra.

Audio could be distorted during phone calls using speakers.»

I hope that the problem will be solved again through a new update and that it is not a hardware problem.

Finally I should note that until recently I had the Apple Watch Ultra (1) and it had no problems related to what I mention.