In Mark Christensen's book AE CS4 Studio Techniques, he says in a side bar tip. " Open GL can have undesireable side effects, most power users tend to leave it off most the time."
So should I leave it on, set it to Always on, or leave it off.
He also says that setting it to Always On will give you the look of OpenGL at all times when you work. What the hell is the look of OpenGL? Does on want this look. Somebody please explain for stupid people like me who don't know. Thats means in plain basic English.!