What are your settings for Anti-aliasing, Ground Cover, texture details, etc.  when you're getting the 19 fps?

Here's my options:

Default except disabled advanced lighting and disabled anti-aliasing.

As you can see, performance is getting worse as the map is revealed....

Please post your debug.err file so we can see more detailed system and driver info.

http://dl.dropbox.com/u/9170386/debug.err

I've also been getting the disappearing buildings bug that I saw in a prior video preview.  Once I zoom to a cloth map though, the buildings come back.

I'm also noticing a weird fog-like graphical corruption that's occurring even when advanced lighting is off.... but right now I'm completely unplayable with advanced lighting...

Some more pics:

Notice the weird colored lines and bars on the screen

After a few turns and tactical battles, my framerate dropped to a crawl.  At that point I started getting even more graphical corruption... terrain would turn black things would start flashing, etc... and then it crashed.  At this point it's unplayable on my system.

I updated the debug.err in the above link...