distorted sound on tv

[nightspydk]

I have a very strange problem with sound on my tv getting distorted after about a day of use. If I disable input signal plus (hdr) and reenable the problem fixes itself. The tv is connected to a mini pc and with another mini pc I do not have any problem so it seems it must be the mini-pc that is the culprit, but since I can fix the problem as described I am at a loss. What happens with the sound is it turns kinda high pitched. It is a cheaper rather recent samsung tv. The bad mini-pc is a bmax b6 plus and on that is running windows 11 even tho it is not really suppoted on that box.

Any help will be appreciated