85 FPS. Then again, the save is a big stack of boxes, so the culling system will hide the bricks you don't see.
EDIT: Try this save:
http://solarmods.googlepages.com/FPSComparison.blsIt's a cyllinder stack of 8000 something bricks. Stand on the orange platform, look at the stack and record your FPS with metrics(fps); (Don't use Fraps, please). Then stand on the blue platform on top of the stack, look down, and record your FPS. Yes, I'm aware that the brick count I wrote in the description is wrong, that's because I saved it again after having added another row of cyllinder bricks.
EDIT: Oh, right, forgot my FPS. Roughly 28 on the orange platform, 17 on the blue.