I am having the same issue.
All worked perfect up to a week ago.
Then, EVERYTHING, started to freeze, all in the same way.
I watch something, and about 20 seconds in it freezes for 10 seconds, then on for 10 and so on. Eventually it crashes to black screen.
My bradband is fine. Nothing was edited on it.
I tried to update the firmwarrs, but the address doesnt work.