Why does keyboard input sometimes freeze?

Question

Keyboard

Recently, a problem has appeared: at some point, keyboard input freezes, that is, the keys are held down, but there is no movement in games. Previously, it was only with W, now I caught the moment that I was standing still, but holding WA or WD did not give anything - it just froze in place. If they are repressed, then the movement continues again. There is no specific algorithm, it just appears, and not often. I don’t know, it’s like this with all the keys, because I managed to check only the main ones.

Just in case, I inform you:
1. There were also problems with the mouse, however: the mouse is 8 years old, and it happened that it hung for 1-2 seconds, every few minutes. Then I bought another mouse, everything is fine with it. But when I started using the old mouse again, the freezes disappeared. In short, nonsense.
2. I confess, somehow I had to beat the keyboard in moments of indignation, but she had no choice there.
Maybe this also affected the problem with the keyboard and it is mechanical, but all the keys work fine, nothing sinks, everything prints. And the problem does not appear often, and given the glitch with the mouse, maybe it's in Windows. But why then is everything in order with the other mouse?

So I want to find out if the problem is with devices or Windows?