Hisense 4K TV sound on YouTube app changes?

Gl
1

I have the problem that the sound of my Hisense 4K 55 inch TV always changes in the YouTube app during a video. The sound is then suddenly very tinny and sounds very strange. Does someone have the same problem or knows a solution? By the way, the problem only occurs in YouTube. With normal TV or Netflix everything is ok.

Va

This is probably due to the fact that the tone can be different with YT.

Audio codec: AAC-LC

Channels: Stereo or Stereo + 5.1
Sampling rate: 96 kHz or 48 kHz

It is possible that the 5.1 sound from the TV can't be reproduced correctly.