Most notably, when 3.2 was released, Intel GMA 965 users had their UIs disappear. If users couldn't update their graphics card driver, they'd have to use this cvar, and restart wow: /console fixedfunction 1 If you've managed to update your driver after already using the fixedfunction cvar, you'll want to reverse it to bring your fps back to normal. To do this: /console fixedfunction 0