Stuttering framerates when panning

[calyth]

I'm wondering if anyone is experiencing this with Civ4.
Things are more or less fine if I stay in a particular screen. Animated combat with multiple men representing the unit is fine, but as soon as you pan around, the frame rate drops enough that things start stuttering. I'm running an AMD2500+/1GB/Radeon 9000, which IMO there isn't a 3D model in that game the card couldn't handle.
Also, the game gets more sluggish as you progress, and quitting and reloading doesn't seem to be a problem.

I'm thinking someone used some inefficient algorithm/data structure when they wrote Civ4, and now it's just sucking the CPU dry. Anyone agrees?

 

[totabiento]

My specs are:

Radeon 9800 pro
AMD Athlon 3200+ 64
1GB RAM

It's my worst complain about the game.

As the game progresses and as the map grows, this start to become more and more annoying.

Hope they get this fixed.

T.