That's exactly what I'm running on my computer, so don't worry.

I know why I have a problem, it's just because the way Inferno's grav air lifts work, it requires placing a fuckload of scenery in a single spot on a map which is pushing the limits of the Halo engine already. Inferno says he doesn't have the problem, but I do, so I'm not going to stop until its fixed.

Fake edit: I made the problem slightly better by eliminating some of the lift's scenery and just upping the individual power of each lifter-scenery-thingy, allowing the lift to still do its job while using less ingame resources.
I also exactportaled the vent containing the lift and the room the lift is in itself, which got rid of most of the problem.

I think its just my computer's age issues which is still causing a problem, but I'm getting a playable FPS, so I'd imagine on a not-barely-functional computer things will be fine.
Now I have to sort out an annoying bug with the ODSTs not listening to my multipurpose map when it comes to changing colors.