Finally. I always enabled it anyway, but it will help those using a more out of the box setup.
Is this really not considered a legit fix though? Even MS Windows disabled effects on fullscreen apps didn't it (I know this isn't entirely the same thing)? Or at least I remember when playing games on Win 7 as I launched games like TF2 I'd notice the effects would get disabled.
Windows does the same thing, fullscreen games can totally bypass aero. Compare a game in borderless windowed mode to one in fullscreen. In borderless windowed mode you get no tearing due to aero, but at a potential performance hit, fullscreen you get tearing unless you enable in game vsync.