Quote Originally Posted by bwat47 View Post
Have you tried using just kwin in 4.8? I had ALWAYS had performance issues with kwin, but in 4.8 its smooth as butter all the way.
Yes, i tried 4.8 too.
Leave some windows on the screen and then drag one with vsync on, you'll see how compiz is smoother,expecially with blur active.Even mutter wins (no blur).

https://bugs.kde.org/show_bug.cgi?id=293044