It will make things faster, sure but so will any OS when first installed. The biggest problem is that it turns folders into "read only" and this can't always be changed, even using the command prompt/attribute etc. It has made my Windows.old folder read only! So I can't roll back to Windows 7 as promised by microsoft. I had one of their engineers take remote control of my machine for over an hour this morningand he couldn't fathom it out! He said they were inundated with calls about this! He has escalated te problem to the "next tier" and I have an appointment for a super tech to try again on Friday.
A google search shoes that this problem is widespread.Other than this stuff the OS looks OK and I'm sure it will be when the problems are ironed out Ha ha!