PCs are "snappier" because there isn't a whole lot of graphical splendor to draw and constantly re-draw on a PC. If you set a static monochrome background, and turn off almost all gui effects, then OSX runs pretty fast. Also be sure to check your scrolling/display setting in your browser as well as for your keyboard/mouse. I noticed it too when I first booted up my Mac but it runs very quickly now.