Invisible Backgrounds

[samsc]

Noticed a slow down of the background as the 'shoe' moved across the screen - normal playback resumed as soon as the shoe disappeared

You can use the statistic HUD to see if there any slowdowns.

The three values at the bottom summarise performance.

Movies- if your movie value approaches 100% - you are doing too much with your discs. Low values are good.
Graphics - if you are drawing too many things will approach 100%. Low values good.
Timing - accuracy of playback based on overall timing. 100% is good.