I was given a pretty nice computer by my cousin.
Just a couple days ago it slowed down to where the letters appear slightly after I type them if I type too fast.
When I drag the bar on the side of a webpage it lags behind when I drag the bar up or down.
It worked great up until there was a Windows 10 update a couple days ago. The update seemed to totally change my new computer.. It even looks different when I turn it on.