Harkonnen,
Thanks for your hard work on this issue.
I had gotten Civ IV working acceptably already, thanks to the .ini changes recommended by Kangaroo, so this patch isn't a huge deal for me. But I thought I'd try it and then describe my experience for you in the interest of providing feedback.
Overall, the patch was a mix of pluses and minuses on my machine; I chose to uninstall it for now. Here are my basic specs:
Athlon XP 3200+ (2.2 GHz)
1 GB DDR RAM
MSI nVIDIA 6600GT 128MB AGP video (nVIDIA driver version 81.85)
nVIDIA nForce2 motherboard audio (nForce audio driver version 4.62)
System is regularly defragged, checked for viruses and spyware, Windows updates downloaded, etc.
I am running Civ IV in windowed mode at 1152 x 864; graphics settings set at "high" across the board with 2x AA. Before installing the patch, the main problems I had were short pauses when zooming out to globe view, medium pauses waiting for leaderheads, long pauses waiting for the Military Advisor screen, and lots of skipping in wonder movies.
I installed the patch with vidmem_usage = 64 and insane_mode = 1. (Every program should have an "insane mode", if you ask me!) I quickly noticed that loading a saved game was faster than before. Scrolling was smooth, zooming out to globe view worked without a hitch...I didn't get to check wonder movies, but in general everything ran smooth as silk at first.
But then, between turns, Mansa Musa wanted to see me. The leaderhead came up after a shorter-than-usual pause, but was very choppy. Approximately 2-3 fps choppy, I'd say. Before the patch, the leaderheads had run very smoothly (after they finally loaded, of course!).
That much I could easily live with; but when the next turn started, suddenly scrolling around the map had become slow and hitchy, and the game in general was suddenly very laggy. It was like trying to run the leaderhead had broken something.
It seems the memory savings were still very much evident, though. I soon quit the game, and it closed in record time, and without the extended period of hard disk churning which usually continues well after the game window itself has disappeared.
I had no significant crash-to-desktop issues either with or without the patch.
Hope some of that helps. If there's something in particular you would like me to try out with your next release, just let me know.
-- Kevin