Once again this is something that is divisive. I for one love to read a good dialogue, love to read inner monologues, get to know the character better because thats what i find compelling in a character, that i can understand his or her personality, motivations, fears, hopes, flaws and merits. While others hate this. Another thing you have maneuver yourself around.
But this is a visual novel and novels are all about writings. In case of a VN the writing is still very important so i for one encourage you to write a lot, make the characters talk a lot. Its not about narration, its about dialogues and monologues thats really important. Those who don't like that.. i use to tell them, there is the skip option.
But i do know that sometimes its too much of the talking. I actually did drop a game due to too much pointless chatter. If you are interested to hear an example of subjective nature, since it reflect my personal preference, than here it is:
There is a scene in Babysitter where we witness two girls having a chat. So absurdly long chat that even holding down the skip option it took quite a while to get over it. It almost consisted more chatter that single scene than what we used to see in complete games around here. I actually dropped the VN then and there.
And there is My Sweet Neighbour where we can follow the inner thoughts of our neighbour's daughter which is just the perfect amount. Usually after every action or chat she has we see an inner monologue of a few lines but it works perfectly showing us the fears and concerns of the girl, the hidden jelousy, growing desire and how her courage builds up.