After upgrading from a 2012 13" base model Macbook Pro to the top model 2013 Retina 15" Macbook Pro (bought this brand new), I've noticed that my CPU usage is way higher on things like Google Chrome, when I install items (e.g. installing an OS in Vmware, or simply installing an app in the App store) my CPU usage goes to 80-100% and the fans run to about 4000rpm - I never experienced this on my old Macbook Pro either. So far I'm not that happy if I'm honest, the battery life isn't amazing, getting about 4 hours was hoping for 5-6 (this is when just watching a film in VLC player, admittedly the CPU is around 30-40% though). Also randomly I keep getting, what I've seen referred to as 'spotlights', my screen darkens and at the bottom there are 7 spotlights - not sure what to do about this. At the beginning putting the display to sleep fixed it but sometimes the issue comes back a few seconds later. It seems to happen more often when it's darker, not sure why. Would this need to be repaired to fix this? Thank you for your help.