My default is to skip through text, and I'll skim the story and context from what's flashing across the screen. I'll stop for a while if I'm interested in what's being said.
Pretty long, if you have the ability to rapid-skip through text.
I don't need a new lewd scene every twenty seconds, but if I have to click thirty options, or hit skip and wait for like four minutes, there's too much text.
Not a fan. Lady D, and older characters like Elexis Sinclaire and Jeanette Voerman, are probably the largest I'd consider normal. Past that, and you're losing more points (due to the unrealism) than you're adding
I'll always change it given the option (which should always be an option). I have a generic one I got from a character I played in a tabletop rpg once, and I've started switching it out for another of the same.