Macbook Pro mid 2012 starting to lag when running more than one program.
Firstly mah specs :
Retina, Mid 2012
2.3 GHz Intel Core i7
8gb 1600 MHz DDR3
NVIDIA GeForce GT 650M / Intel HD 4000
OS X 10.8.4 (12E55)
So, i bought this macbook about a year and a month ago and since i bought it everything has run fine, it has always been fast and smooth, until around 2 months ago when it started getting a little laggy in handling more than one program being open. Before this i was able to run Photoshop, Cinema 4D, Second Life and Chrome all at once and recieved no speed decrease what so ever. So i figured that it must just have been a little clogged up maybe, honestly wasnt sure but tried clearing cache, tried freeing up memory with some of the mac memory management tools from the App Store and non of these worked so in the end i backed up what was important and wiped the HD and re installed the OS. Annoyingly i am still having problems, if i have Photoshop open and i am surfing chrome it lags on scrolling web pages or loading links. If i have Second Life open i seem to lag with more than 3 players around me quite badly, even if i put Second Life onto its lowest Graphic Settings i still lag where as before i had this issue i could run it on its highest Graphic Settings and recieve little to no lag what so ever. This happens for most programs that used to run smoothly, if i now open Cinema 4D and try anything else.....the system slows down.
I COULD take this to the apple store and genuis bar and ask them to have a look at it HOWEVER i am back at Uni in 2 weeks and i need the macbook for my studies as i am currently working on a summer project and need it for research, can any of you Mac Wonders out there suggest anything else for me to try. I have checked the HD and it says its not failing and is verified and found no issues with the partition.
MacBook Pro with Retina display, OS X Mountain Lion (10.8.4)