Drop down under “rendering” and visit the “general settings”. Check everything except “use managed upload textures (XP only)”, “enable automatic fullscreen exclusive mode”, and “adjust queue sizes to GPU RAM size”. You can choose not check “disable desktop composition” if you find the windows color scheme changing annoying, but it’s recommended for best playback while in fullscreen. Alternatively, just turn off the warning message that windows gives when the color scheme changes. You won’t really need Aero when in full screen anyway. Then, max out the sliders and hit “apply”. Note that the CPU queue sizes maxed out are only good for people with more high end computers. So if your computer isn’t as good, try playing around with the placement of the sliders. Visually: