When the V3S is in motion, there are severe FPS losses and gains between third and first person view modes.
While in third person, generally there is a more severe FPS loss the faster the V3S is travelling, especially in cities.
While in first person, FPS is generally better, **but when you are driving the V3S in first person and look down at the wheel/instruments/pedals, VERY SEVERE FPS LAG OCCURS**.
Something about the rendering of the V3S itself, (while it is in motion), seems to be the source of lost frames.
I have not confirmed this is an occurrence with other vehicles.