Redmi Note 9 Android S Sound Problem

Hello. My phone is Redmi Note 9. /e/ OS version Android S. My problem is that when playing any video or audio file on the phone, it plays intermittently. The sound stops and then comes back. I’m going to try and upgrade to Android R right now. If not, I will go back to the Xiaomi original version and see if there is a problem there.

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