I found that with the release of the latest version of the software for Radeon (it seems to me that the problem is connected with this) the games in the "full screen" mode began to work strangely: the picture freezes, but the sound and the game process itself continues. If I press Alt + Tab twice, then everything works again for a couple of seconds and then freezes again. And what I just did not do, where I did not poke in the software settings, I did not find anything.