Hello! Something has happened to my 2009 MBP and it’s moving slower than ever before. I boosted RAM to 8GB soon after I bought it. I put in a 250GB SSD boot drive a few years ago, as well as a 1TB backup drive (in place of the DVD drive, which I took out). I currently have over 80GB of free space on the boot drive, and over 300GB free on the backup drive. My computer is running OS X 10.11 El Capitan (its specs don’t allow it to upgrade any further). After googling, I found and followed the advice in these two articles: https://9to5mac.com/2015/10/16/how-to-make-your-mac-run-silent-cool-fast-os-x-el-capitan/ https://9to5mac.com/2015/04/30/how-to-clean-speed-up-mac-free-download/ I actually ran OnyX twice, just in case(!) The result is that my computer is now running slower than ever :-( QUESTIONS 1) I’m wondering if I need to do something to the SSD drive to tweak its settings...I’m under the impression that adding a 3rd party SSD requires a certain amount of maintenance…but I have no idea what it is that I need to do? 2) I’ve also been wondering if I should just reinstall the OS? If I were to do this…perhaps I should do so with an earlier (less demanding?) version of OS X (which one?) 3) Should I bring it to the Genius Bar? Perhaps they could reinstall the OS or tweak the SSD for me? ANY thoughts/suggestions would be much appreciated!