This time I'am with Asus. I have max pro m2 and didn't noticed this issue. Before 1 year, there was an sound issue, I went to service center, they told me that earpiece isn't working and they replaced it in warranty... After that I never experienced any issue in max pro m2.
Just visit a service center once. We regularly service our bike, so why not service a phone by just doing software from official support. It removes all temp bugs, speed ups the device.