Lag while saving (Pokemon White)

[Roryn]

Hi! I'm having some problems while saving my game in pokemon white. When i try to save, the FPS drops to 5~7, which makes saving often a little annoying. It take a minute to finish.

Then i went at battery folder and my save has 8.193KB. I created a new game and saved at the very beginning. The new file has only 513KB.

Is this expected? When a little further in the game (not so further, 1 gym badge only), the save gets that big? Is this the reason why it's lagging so much when I save?

Thanks!