For weeks we had no problems with MC, multiplayer and singleplayer was okay.

But now for to weeks or so I can't play muti-player with out lagging so i'm kill by mobs all the time and my singleplay freeze all the time too.

I didn't do anything different from usual. My daughter plays too. She plays multigames allright, but her singlegame also freeze more than my games do.

I have tried updating everything, and turn everything down to the minimum.
What else can I do?