Forest slowdown

I've finally completed act 1. I found some big input lag on the Forest (act 2).

Sometimes, if I try to pick up something then nothing happens. After some clicking I hear some "beep" (as if the input queue is full) then after some time finally my character moves.

It has happened twice (yesterday and today).

Does this happen only to me? I had almost no problem in all Act 1 (only some slowdown and lagging here and there).

Fantastic game BTW.

Tons of people have been experiencing huge FPS drops and slow downs since the last couple of patches. It isn't just you it's a majority of people.