I have had this problem with every Geneforge game, and A4-A5 as well. While the games are barely playable, it's just too annoying to play when the cursor is very laggy.
I think I know how fluently are these games supposed to work, since I've never had any problem with A1-A3.
Considering how pathetically low the requirements of GF1 are, I have no idea why my rather new laptop couldn't play even it sufficiently. You see, my old Windows 98 computer which was super slow due to memory shortage managed to play GFs better.
Here are some specs of my computer:
Acer Aspire 7520
Windows Vista Home Premium
AMD Athlon 64 X2 Dual-Core Processor TK-57 1.9 GHz
RAM: 4GB
NVIDIA GeForce 7000M / nForce 610M
I've tried to uninstall/reinstall the games. I haven't had any other programs running while playing. I have updated DirectX and all video/sound/other drivers. There are no viruses on my computer (or, at least, no viruses that updated F-secure Internet Security 2009 finds). There should be plenty of available memory (usage about 1000/2814 MB).
So... is there anything else I should try, or is my computer supposed to be THIS weak?