> This is not an issue with your operating system, and generally 
> harmless.  Have you ever actually noticed desynchronisation (not 
> the message)?  I haven't, and I see that warning daily.

I do not get that message often, but when I do, I see stuttering of
playing media.

> If the text bothers you, you can try:
> - Not using your {C,G}PU for other tasks while watching videos
> - Enabling acceleration if supported (I can vouch for 
>   intel-vaapi-driver)
> - Raising the priority of the MPV process with {io,}nice
> - Not playing from slow storage or networks at all
> - Watching lower-bitrate movies
> - Buying a more expensive computer (bonus points for an ‘X’ in 
>   the name).

Thank you for your suggestions :)

Regards,
RG.