>Who knows what happens in the depths with IRQ, interrupts etc etc... maybe worth resuscitating an older USB keyboard to see if that resolves it.

Once I get back home, I will disable that keyboard for a while and work directly from the laptop keyboard to see how it will go.

Also, the overall performance of today is aweseome, either in the PC in general or using the Internet wireless connectivity. At home, I have the fiber and it is incredibly much slower than here.

So, there is something that causes that. It is either the keyboard, which seems to be the case, or the fiber router itself, maybe a combination of both.