Bad speech quality in every AppleTV+ Content since TV OS 16.2

Hi there, I have an ATV 4K A1842 32GB and made the TV OS 16.2 update yesterday.

After the update every ATV+ content has an incredible bad speech quality. Sound general is great but the dialoges sound like the worst telephone quality I ever heard. This affects all ATV+ content, no matter which audio language I select. Changing audio settings (atoms, digital, etc.) has affects the the quality in general, but dialogues remain horrible. Any other video content in other Apps has no problem.

Can you help me?

Yours, Andreas