the other day there was a problem, after some time of the game, the sound disappears (slows down). In particular - the sound of pedaling, the sound of loot (the voice acting of the loot that got into the backpack is late), there is no sound from a working mining mine ....
Restarting the game for a while fixes the problem and then it appears again.
The problem appeared in the previous patch of the stable version 2.5.62