I'm not a stupid blind customer, so I've known for a long time that Apple products are becoming crap (especially since I've been using them for 15 years and can tell the evolution). But when I recently broke my Macbook Air screen (which of course there's not point in fixing given the replacement price), I just went ahead and bought an a new rMBP 13" from 2015... ...and I was both negatively surprised and also not surprised that a brand new expensive computer worked very bad and was slower than my old Macbook Air! It's notable in the finder which is constantly lagging and having freezes, in Outlook and other contextual options that are slow to fetch informations and propositions, or overall tasks and performances of which WindowServer takes a lot of CPU. I'm about to make my whole company change system (which has been suggested many times by other colleagues) after because the abusive greed and scam Apple has become is off-the-hook, but I'm giving El Capitan a chance... ------ So my question is, from the many betas that are already out: does El Capitan fixes these performances, CPU, memory and graphic issues? Or is it the same, or in fact new, pre-planned obsolescence BS?