Hi, how should I run my MacBook pro smoothly? I used to have Mid 2011 Macbook pro, lately, that Mac got very slow when I work on Lightroom (especially when was using the adjustment brushes). So I just updated it to Macbook Pro 2018, I see it fast but not what I expected. I don't understand why 40% of my ram is working when the Macbook pro is only running the Safari. Even when it is idle still consumes 30% of my ram.