My WED crashes regularly if I have the latest view drivers loaded. It just closes or freezes, giving me no chance to save. So I have to choose the oldest, worst drivers from the list in GXL Properties. They actually run a bit faster than the newer ones (presumably because they're "doing" less), but the 3D view looks terrible--and drastically different from the compiled level, which makes trying to select textures that work well together very difficult, as in the compiled level often the brightness or colors are all wrong whereas it looked fine in the WED 3D view.