Content Manager - RSS 4 starting races slow

Hi all,

I am new to PC racing and having came across Content Manager, I downloaded the Lite version as well as the RSS 4 car.

I love Content Manager but for whatever reason, whenever I start a race with the RSS 4 car, the AI start really slow after the lights and just trundle around the track at a very slow speed, slow enough to be lapped on Lap 2. I have tried other cars and tracks but this only appears to happen with the RSS 4 Car.

I also tried an RSS 4 race on the main AC menu and the AI started the race fine.

I understand I am probably doing something wrong or have some kind of setting incorrect. Any help would be greatly appreciated.