my MacBook slows down drastically
I am using Macbook Pro Mid 2014 model. I use it personally and when in Office, it gets connected to LG 31 4k Monitor.. I have been using this combination for about year or more... but of recently, I am noticing sudden slowdown of the computer.. the mouse moves softly but all my applications just stutter to open and close. there is a huge slow down.. but after I close Safari, or my mail, it works back to normal again..
Can Anyone help me..