I use both Chrome and FireFox
both frequently, constantly show the error PAGES NOT RESPONSIVE or NOT RESPONDING then give the choice of WAIT or Kill.
I have read many forums. I have talked to BestBuy Geek, and Staples internet person.
On line there are thousands of people who have the same problem. in general what they suggest is useless.
they all say that the programers know of the problem and one just has to wait until they correct the situation.

in the meantime, does anyone know what to do that really works?
this happens on my desktop, notebook, and tablets.