I narrowed it down to the fact that my Blt is somehow in efficient. You see, I am using the generic Blt() function in DirectDraw to draw my sprites. However, I have some surfaces that are quite large, such as 800x600 background surfaces and other large bitmaps that are the width/height of the screen. I have noticed when drawing those larger surfaces to the screen (I draw to the backbuffer first, then flip(pageflipping)), the program gets very slow. What is causing this, and how else could I load these larger bitmaps, in order for them to blit faster.
