For me, unless I am going to breed with her, or depend on her earnings in some technical, scientific or legal field, I really don't think it matters much what a woman's (or man's for that matter) IQ is.
If she is not interested enough in what is going on in the world to talk about anything but gossip or celebrities or daytime TV then it may be too boring. But that is a pretty low bar. Those women will usually not be interested in better educated men anyway.
I was married to a very high IQ woman, and although there were very good things about that, I would not place that trait very high on my "must haves" going forward.
Of course at my age that list is short anyway. Mainly, is she cute enough to get me going, and not too annoying to sustain that at least until another candidate shows up? Her vocabulary would only be a factor in regard to how often she calls me sugar, honey, baby, or daddy. Or how enthusiastically she says, "OH WOW!"
OTOH, negatives would include any use whatsoever of the words issues, subtext, or underlying.
Ha