I've had my Mac Pro for about 3 years now. It was the top of the line model for 2012 and it was great. In the past 6 - 8 months though it has really started to slag. I find now after working on it for a few minutes it starts to slow down a lot. My magic mouse is constantly laggy and I just don't know what to do to speed this up. My specs are OS X Yosemite Version 10.10.4 Mac Pro (Mid 2012) Processor 2 x 2.4 Ghz 6-Core Intel Xeon Memory 24 GB 1333 MHz DDR3 ECC Graphics ATI Radeon HD 5870 1024 MB I mostly work in Adobe Creative Cloud (Photoshop, Illustrator, InDesign, Premiere Pro) All CC 2015. I have 75% of my 1TB HD Free and I just did a factory reset 2 weeks ago and it's still the same problems. Any helpful hints or tips to help me out here would be greatly appreciated!