当你建造大型的场景，并且需要使用各种类型的灯光，用来营造理想的效果时，你会发现自己的游戏运行很慢，帧数也急剧下降。
As you start working with large levels requiring many different lights to create the look and feel you want, it can really start bogging down your game and have an impact on the framerate.
当您运行游戏，每一帧数据被记录，最后则会显示几百帧的历史。
When you run a game, data is recorded each frame, and the history of the last several hundred frames is displayed.
虽然游戏帧数还需要一些加强工作像游戏画面切换和场边球员的镜头， 不过大部分都运行的很好。
The framerate still needs some work during transitions between gameplay and shots of players on the sideline, but for the most part everything runs well.
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