Guild Wars 2

I might come back to GW2 because i stopped cuz of bad optimization.Is the game better optimized, and how is it overall?Are the new features good or bad?

Play and find out. Takes a couple of minutes of your time.

But it installs couple of hours. I just want to know should i install it and start playing it.

It’s subjective, even comparable systems report varying performance. Yargesh’s advice is the best thing you can do to find out.