In a 2D density plot, the intensity $I$ at a point $(x, y)$ is estimated using a bivariate normal kernel with bandwidth $h$. If the kernel is $K(u, v) = \frac{1}{2\pi h^2} \exp(-\frac{u^2 + v^2}{2h^2})$, what is the effect on the visualization's smoothness if $h$ is reduced by a factor of 2?