Specs - Have MacBook Pro (13-inch, Mid 2012) - New SSD What Happened Went to an authorized Apple retailer to install an SSD. They migrated my information from the old hard drive and it seemed to work pretty fast, but would lag a bit. I've been meaning to restore my Mac, so I restored the Mac, reformatted the hard drive and did a fresh install of Lion (Internet recovery) and then upgraded to Seirra (10.12.5). I enabled trim(via terminal) and checked that it is enabled in System Information. Problem My Mac is freezing every few seconds, even typing this, it froze at times.