I am not happy with the way the screen updates. Everything is very slow. Also, whenever the system has been idle for a while, a Toshiba ad comes up as a screen saver.
Some displays are faster than others, however.
However, from your description, I suspect it's passive-matrix, and that may be your problem. With a quality active-matrix display, the screen is virtually as speedy as a traditional desktop monitor. With an active-matrix screen, each pixel on the display has its own transistor controlling it. On a passive-matrix screen, one transistor may control many pixels. Thus, the graphics are not as nimble.