I had the same problems as everyone else in this thread.
I was freaking the **** out because I need my macbook to work at any given time. How am I gonna use Logic if I can't even scroll down a news article?
For five hours straight I was looking for a solution and during this time I tried at least four very complex methods including some next-level hi-tech stuff I didn't understand 10% of, but managed to get through. It yielded no result. I had tears in my eyes by the fourth hour.
Was it frustration?
Or sheer sadness?
I don't know..
Then I stumbled upon this thread! This beautiful thread, where multiple people said that AutoCAD worked for them. Now, I took that with a grain of salt ofcourse, as it sounded too simple and frankly quite moronic, that this software intended for 3D designs would remove the seemingly unrelated lag problems on my MacBook Pro. During the whole process of downloading and installing it I was already getting ready to go to the apple store with my mac, as I was sure AutoCAD wouldn't work. Then I opened AutoCAD.
BOOM!
My MacBook works like a charm! I have no idea how, why, when, who what?! BUT IT DOESN'T MATTER!
Guys, I've been using the Interwebz since '97 and this if my first forum post. That's how happy I am right now. I am so happy that I replied to a forum post just to say that it worked for me, and maybe others can share my happiness.
Guys.
Wow.