I have the game for the PS 3 and on my unit the game does not run as smoothly in late game when there is a lot of activity on screen. It is not a constant frame rate slow down, but instead more like brief graphic hang-ups. It usually manifests itself during the battles when later gunpowder units are fighting. It only hangs up for a moment or two, but it is a bit irritating since one does not expect this on a console.
My system is one of the older 60 GB models that has the all of the PS 2 backward compatible hardware. I have been told that the newer 40 GB (not backward compatible) models actually perform better because they run cooler than the 60 GB versions.
At first I thought maybe my particular console was acting up, but this is the only game of about 5 that I have that does this. I also discussed this on-line at another site and at least one other person said they had the same issues on their PS 3.
Still, as I said it only appears to happen at the start of battles and for me it's not enough of a problem to keep me from playing and enjoying the game.
I do not know if the X-box version has any of these issues.
Cheers
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