Hey Everyone! The title pretty much says it all. I bought a used 2014 mac mini, the basic configuration 1.4gHz core i5, 500GB HDD and 4GB RAM. It came to me with High Sierra and I wiped the HDD and did a clean install of High Sierra. I will be using this as an entertainment center in the family room but am looking to make it as speedy as possible (until, someday, I will update the HDD to a SSD), so, will an older OS X run more quickly on this machine? According to the spec sheet online for its serial number, it looks like it was built in the latter half of 2016 (apparently, it still has original Apple warranty until May 2018, as well). So, opinions on what OS to eek out the most speed?