Hello, I just upgraded my Mac mini 2012 to 2x 8GB sticks of Crucial DDR3 1600mhz ram. After the first install the OS booted up into it's normal state, but in doing so I experienced some "jitter' for lack of a better word! Once the aple logo has been displayed, my screen flicks to black for a second then my desktop screen appears but the mouse moves "jerky" until a second later then all is well. I have run the Mac Hardware test by holding down 'D' during start up.. and all appears fine. THe ram is noticed by my machine correctly under "about my mac" I don't remember the startup being like this with the original 4GB of ram so I wanted to ask if that's all normal before swapping the ram back out and testing again? Thanks!