Not sure tbh. I have it on an SSD FWIW, although a lot of tracks do have a couple of spots where fps can dip a little anyway.
I learned the hard way on the carousel too... Not sure about the mini carousel at the end, but I chickened out anyway.
Car setup if it helps:
Final drive: 10/48
Aero: 17/26 to stop it losing the back on a couple of flat out bends.
ARB: 110000/25000
Fuel: 15L