Xorg/Compiz is using massive amounts of CPU. What to do?

I used "Compiz Config Settings Manager" to resolve the same issue. Though it wasn't using nearly as much of my CPU, just enough to annoy me from time to time.

sudo apt-get install compizconfig-settings-manager

After installation, press the Super/Windows key, and begin to type "Compiz", after which you can select the tool. (There is a warning upon opening the application, stating to be wary of changes made.) Click "Ok" and click on "OpenGL" (The actual words)

Uncheck "Sync to VBlank", and depending on your system, change the "Texture Filter" accordingly. (I personally have mine set to "Fast" and have not experienced any issues.)

Afterwards I exited the application, and restarted my computer without any further problems.