I upgraded my desktop, an i7 with 16gb memory and dual video cards, and it killed my performance. I ran it for a couple of weeks before reverting back. After reverting my performance was top notch again. I'm not sure what they did but I tried several of the tips to correct it. But why should you have to turn everything off that was running fine on 7? It also would not install on my two AMD processor computers, none of the fixes worked either. I did put it on an old celeron dual core that just runs my cameras and it works okay on it. It was mostly the mouse lag that drove me crazy, and the file copy time was ridiculous. I also think they did something to slow down Chrome because it worked much slower than the Edge browser, but they both sucked.