I tell you what, that saved me a lot of troubleshooting time. Unreal plays like garbage on my new system with the 23.11 set, so I switched back to the 21.83 set and everything ran great. But I dropped back ~400 points in 3dMark2001. I was going to spend my night looking for those points in 4-in-1 drivers, PCI layout, the whole nine. I didn't think one video driver upgrade would result in a 400 point jump.
I'm glad to see the same results on another system. Thanks for the post.