Integrity and authenticity checks: Once you have downloaded an image, please verify its integrity and authenticity.Anyone can produce fake ISO images, it is your responsibility to check you are downloading the official ones.To enable go to: Applications - AFAIK only KWin and compiz offer opengl/3d based compositing. the default window manager of xfce) offers fancy stuffs such as transparency/shadows only.
New features: This new version of Linux Mint contains many improvements.
For an overview of the new features please visit: “What’s new in Linux Mint 18 Xfce“.
I want to install Nouveau's experimental 3D driver (which worked great for me under Ubuntu), Xfce by design leaves out much of the eye candy of other systems. The most you can get is 2D accelerated compositing if your driver supports it (most do), unless you are willing to install other software.
You have to enable the compositing feature in XFCE's settings manager, and to my memory it will use hardware acceleration automatically.
What @Ten Plus suggests in context with xfwm4 to enjoy.