Memory Leak?

Hi, i was just wondering if anyone else is getting this. Wherby your fps drops as your playing the game ie u start a battle with 60 fps for example and then say u started it again later on without closing down NTW or your computer and it now is showing 40 fps when the battle begins. It seems to be happening to me.

I get this in the GC when sailing ships round certain areas, the frame rate drops to around 1-2 and once the ship moves out of the specified area the frame rate increases again.

I've noticed increased loading times as I keep playing.

Moved to Napoleon: Total War Technical Help.

That's not a memory leak. That is the graphics card play catch up.