OK, so my system can handle higher graphics, but I wasnt interested in them for NWN so I set them for minimal: compatibility mode.
On compatibility mode my transitioning times were HUGE.
So, I have just refurbished my laptop and got it running like it used to, and I set my gaphics up to max.
My transitioning times are minimal. Don't know why that is, but maybe setting it to minimal actually lagged my game. Everything is so much smoother. Took away grass and water shine, but I dodnt want those anyway.