It is a good thing that YouTube is always here to help you whenever you need some useful video to watch in order to find out more information about a certain thing. I often look for such videos because that is the best and fastest way to solve a problem you are facing. Recently, I managed to improve my laptop's performance by watching this amazing video and then I followed its instructions to fix the speed. It is very easy to find what you are looking for. You just need to type “why is my mac running slow” in the search bar and the right video will pop up on your screen.