Canon SD 870 Screen

[Thomas W]

I just recieved my Canon SD870 today, when I was playing around with it, I noticed that when I was in dimly lit rooms or when I zoomed in and crossed a reletivly dark area, my screen because really laggy and has a lot of color molting.

Is this a normal thing? Because my other cameras don't have that problem, but they do have a lot smaller screens.

Is this just a trade off for a bigger screen?

Ya'lls help is much appreciated!