I definitely suggest that those new to RCS64 turn OFF most of the cool simulation features when getting used to the software. Then, add them in one at a time, running a few races with each new feature. Also, don't necessarily add them all in one at a time. Try some races with just fuel, then some with just tires, etc. When you pile on all the features, it can be hard to tell what is causing the car to perform in unexpected ways.