Try Landscape remix v2, it improves the textures but isnt such a high memory updgrade as the visual packs. The trouble is, to remove the visual packs I think you will have to reinstall the game and then the patches which would suck (But still it might be an idea if performance is really bad. When you uninstall just make sure you leave all the mods in the data files directory and when you reinstall, repatch and install the landscape remix, just select everything again in the data files are.
I hear ya. That would take a good, long time...still, it might be best. By the way, have you seen Brash's Land Textures? I think they might be preferrable to Landscape Remix, from what I've seen of both. Those, plus Carnajo's various city texture packs, would be lighter on moving through areas. I don't know if they would do anything for the FPS rate, however.
As for Cacheman. Select the pregenerated profiles menu and then load the "gamer" profile.
No profiles on it. I suspect that's in the purchased version. I only have the shareware, which is hobbled. <img src="/ubbthreads/images/graemlins/rolleyes.gif" alt="" /> Why they couldn't have made it fully operative only for 30 days is beyond me.