I'm usually running the following Software: Chrome, Skype, Outlook, Android Studio, Safari, Terminal, AppCode, Xcode, Xcode Simulator, Firefox.
Also apart from the built in monitor I have 2 additional monitors hooked up.
I realize this is a lot. I'm using up 6.6GB of RAM. The CPU is 8.6% System, 4.45% User and the rest is idle. (At least while I'm on here typing stuff. It obviously changes once I compile something etc.)
The thing that annoys me is that all the fancy OS stuff doesn't work smooth. i.e switching between desktops, mission control, launch pad, peeking to desktop. The animations stutter a lot. Like a video game you're running on too slow hardware.
I'm guessing I'm just doing too much at once (if you think this should still work properly please share ideas on what I could investigate). Do you think a faster MacBook would help significantly? What may be my bottle neck here? Do you think El Capitan will improve on this? They said at least that El Capitan optimizes a lot under the hood.