I am using an NVidia 64MB MX200 graphics card, and haven't noticed any performance issues at all either before or after the patch. I suspect that the graphics card problems are more a combination of the PC and graphics card - I have a brand new P4 1.7GHz machine with 512 MB of RAM, and suspect that may be balancing out any problems the card may be giving.
I have also played the game on a PII machine without a 3D card, and got very slow scrolling on that machine, hence why I think the spec of machine has a lot to do with the graphics problems.